As filed with the Securities and Exchange Commission on October 3, 2002
                                                      Registration No. 333-48800

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                        POST EFFECTIVE AMENDMENT NO. 3 TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                          BioMarin Pharmaceutical Inc.
             (Exact name of registrant as specified in its charter)

              Delaware                                 68-0397820
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
 incorporation or organization)

                    371 Bel Marin Keys Boulevard, Suite 210
                            Novato, California 94949
                                 (415) 884-6700

       (Address, including zip code, and telephone number, including area
        code, of registrant's principal executive offices)


                                Fredric D. Price
                             Chief Executive Officer
                          BioMarin Pharmaceutical Inc.
                     371 Bel Marin Keys Boulevard, Suite 210
                            Novato, California 94949
                                 (415) 884-6700
          (Name, address, including zip code, and telephone number,
           including area code, of agent for service)


                                    Copy to:
                              Siobhan McBreen Burke
                      Paul, Hastings, Janofsky & Walker LLP
                       515 South Flower Street, 25th Floor
                       Los Angeles, California 90071-2228
                                 (213) 683-6000

     Approximate date of commencement of proposed sale to the public:  From time
to time after the effective date of this Registration Statement.


     If the only  securities  being  registered  on this form are being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. |_|
     If any of the securities being registered on this form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. |X|
     If this form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. |_|
     If this form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. |_|
     If delivery of the  prospectus  is expected to be made pursuant to Rule 434
under the Securities Act, please check the following box. |_|

THE REGISTRANT HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT  SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY  STATES THAT THIS REGISTRATION  STATEMENT
SHALL  THEREAFTER  BECOME  EFFECTIVE  IN  ACCORDANCE  WITH  SECTION  8(a) OF THE
SECURITIES ACT OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME  EFFECTIVE ON
SUCH DATE AS THE SECURITIES  AND EXCHANGE  COMMISSION,  ACTING  PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
================================================================================





                                   PROSPECTUS




                                2,500,000 Shares


                          BioMarin Pharmaceutical Inc.


                                  Common Stock
                              ---------------------

This  prospectus  will allow us to issue and sell up to the remaining  2,500,000
shares of our common  stock over time.  On August 15,  2001,  we entered  into a
common stock purchase  agreement  (which was amended on September 24, 2002) with
Acqua Wellington North American  Equities Fund, Ltd.,  pursuant to which, we may
sell them shares of our common stock from time to time as described in the "Plan
of Distribution."

        o      We will provide a prospectus supplement each time we issue shares
               of our common stock.

        o      The  prospectus  supplement  will  inform you  about the specific
               terms  of the  offering  and  also  may  add,  update  or  change
               information contained in this document.

        o      You  should  read  this  document  and  any prospectus supplement
               carefully before you invest.

Our common stock  currently  trades on the Nasdaq  National Market and the Swiss
SWX New Market under the symbol "BMRN."



See "Risk  Factors"  beginning  on page 4 to read  about  risks  that you should
consider before buying shares of our common stock.

Neither the Securities and Exchange Commission nor any other regulatory body has
approved or disapproved these securities or passed upon the adequacy or accuracy
of this prospectus. Any representation to the contrary is a criminal offense.

                                  The date of this prospectus is October 3, 2002






                                TABLE OF CONTENTS

SUMMARY........................................................................1

THE OFFERING...................................................................3

RISK FACTORS...................................................................4

FORWARD LOOKING STATEMENTS....................................................16

USE OF PROCEEDS...............................................................17

PLAN OF DISTRIBUTION..........................................................18

LEGAL MATTERS.................................................................20

EXPERTS.......................................................................20

WHERE YOU CAN FIND MORE INFORMATION...........................................21










                                     SUMMARY

This  prospectus  contains  forward looking  statements  which involve risks and
uncertainties. Our actual results could differ materially from those anticipated
in these forward  looking  statements as a result of certain  factors  appearing
under "Risk Factors" and elsewhere in this prospectus.

The following summary does not contain all the information that may be important
to  you.  You  should  read  the  entire  prospectus,  including  the  financial
statements and other  information  incorporated by reference in this prospectus,
before making an investment decision.

We develop enzyme-based therapeutic products to treat serious,  life-threatening
diseases and conditions.  We leverage our expertise in enzyme biology to develop
product   candidates   for  the   treatment  of  genetic   diseases,   including
Mucopolysaccharidosis  I  (MPS  I)  ,  Mucopolysaccharidosis  VI  (MPS  VI)  and
Phenylketonuria  (PKU), as well as other care situations such as  cardiovascular
surgery and serious burns. Our product  candidates  address markets for which no
products are currently  available or where current products have been associated
with major deficiencies.

Our lead product candidate, Aldurazyme(TM), is being developed for the treatment
of MPS I disease. MPS I is a debilitating and  life-threatening  genetic disease
caused by the deficiency of  (alpha)-L-iduronidase,  an enzyme  responsible  for
breaking  down  certain  carbohydrates.  MPS  I is a  progressive  disease  that
afflicts patients from birth and frequently leads to severe disability and early
death.  There are  currently no drugs on the market for the  treatment of MPS I.
Aldurazyme has received both fast track  designation from the United States Food
and Drug  Administration  (FDA) and orphan drug designation for the treatment of
MPS I in the  United  States  and in the  European  Union.  The  impact of these
designations  is  described  in  our  Annual  Report  on  Form  10-K,  which  is
incorporated by reference in this prospectus.

We are developing  Aldurazyme  through a joint venture with Genzyme  Corporation
(Genzyme).  Generally, the FDA requires three types of clinical trials, which we
refer  to as Phase  1,  Phase 2 and  Phase  3,  prior  to the  submission  of an
application  to  commercially  market  a drug  product.  In  collaboration  with
Genzyme, we completed a placebo-controlled  Phase 3 clinical trial of Aldurazyme
in August 2001. A  placebo-controlled  study involves  collecting data both from
patients  receiving  treatment of the tested substance and patients receiving an
inactive substance and comparing the results.  By contrast,  an open-label study
involves only  collecting  data from patients who know they are  receiving,  and
doctors who know they are administering,  treatment of the tested substance.  On
June 24, 2002, we announced detailed results from this placebo-controlled  trial
and the  preliminary  six-month  findings from the open-label  extension of this
trial.

Our joint venture submitted a Marketing  Authorization  Application (MAA) to the
European  Medicines  Evaluation  Agency (or EMEA) on March 1, 2002. The EMEA has
accepted  our MAA and  validated  that it is complete  and ready for  scientific
review.  Accordingly,  the EMEA's Committee for Proprietary  Medicinal  Products
(CPMP)  will now  evaluate  the  application  to  determine  whether  to approve
Aldurazyme  for the  treatment of MPS I in all 15 member  states of the European
Union.  Norway  and  Iceland  also  participate  in the CPMP but have a separate
approval process.

On July 29, 2002, we announced  that  together  with  Genzyme,  we submitted the
final  portion  of  our  "rolling"   Biologics  License  Application  (BLA)  for
Aldurazyme to the FDA. The final portion of the BLA includes  clinical data from
the six-month,  placebo-controlled  Phase 3 trial of  Aldurazyme,  six months of
data from the ongoing  open-label  Phase 3 extension  study,  and three years of
data from the  open-label  Phase 1 trial and extension  study.  On September 16,
2002,  we  announced  that  the FDA has  accepted  the BLA and has  granted  the
application  priority review status.  The FDA will respond to our application by
the end of January  2003.  Genzyme  and we  anticipate  a response  from the FDA
regarding the BLA in the United States during the first half of 2003.

We are developing our second product candidate,  Neutralase(TM), for reversal of
anticoagulation by heparin in patients  undergoing  Coronary Artery Bypass Graft
surgery, or CABG, and angioplasty.  Heparin is a carbohydrate drug commonly used
to  prevent  coagulation,  or  blood  clotting,  during  certain  types of major
surgery.  Neutralase is a  carbohydrate-modifying  enzyme that cleaves  heparin,
allowing  coagulation  of blood  and  aiding  patient  recovery  following  CABG
surgery,  angioplasty  and knee and hip  surgery.  Based on data  from  previous
trials,  we are  proceeding  with plans to initiate a Phase 3 clinical  trial in
CABG.



In addition to Aldurazyme and Neutralase,  we are developing other  enzyme-based
therapeutics for the treatment of a variety of diseases and conditions. In 2001,
we announced results from a Phase 1 trial of Aryplase(TM)  (formerly referred to
as rhASB) for the treatment of MPS VI, another  seriously  debilitating  genetic
disease. Based on data from this previous trial, we initiated a Phase 2 trial of
Aryplase  in  March  of  2002.  The  primary   objective  of  this   open-label,
multi-national  Phase 2 clinical trial will be to evaluate the efficacy,  safety
and  pharmacokinetics  of weekly intravenous  infusions of Aryplase in 10 MPS VI
patients.

We are  also  developing  Vibrilase(TM)  (formerly  referred  to as  Vibriolysin
Topical),  a topical  enzyme  product for use in removing  burned skin tissue in
preparation for skin grafting or other therapy.  We initiated a Phase 1 clinical
trial of  Vibrilase  in the United  Kingdom in the fourth  quarter of 2001,  and
pending positive results, expect to begin a Phase 2 clinical trial in either the
United States or the United  Kingdom  following  the  completion of this Phase 1
trial.  In addition,  we are pursuing  preclinical  development  of other enzyme
product candidates for genetic and other diseases.

Recent Developments

On August 22, 2002, we announced that we completed the acquisition of all of the
outstanding shares of Glyko Biomedical Ltd. (GBL). GBL's principal asset was its
21% ownership interest in our common stock. GBL owned approximately 11.4 million
shares of our common stock. Under the terms of the acquisition agreement,  GBL's
common  shareholders  received  approximately  11.4 million shares of our common
stock in exchange for all of GBL's  outstanding  common stock.  There was no net
effect on the number of shares of our common  stock  outstanding,  as we retired
the original  shares of our common stock held by GBL shortly  after  closing the
transaction.

On July 31, 2002, we announced  that the U.S.  Patent and  Trademark  Office has
issued U.S. Patent No. 6,426,208 covering Aldurazyme for the treatment of MPS I.
The patent claims unique  characteristics of the  pharmaceutical  composition of
Aldurazyme,  including,  but not limited to, the purity of (alpha)-L-iduronidase
in the final formulation.  This patent, which protects a highly purified form of
(alpha)-L-iduronidase,  supports the  intellectual  property  position for using
Aldurazyme to treat MPS I.

                                .........

Our  principal  executive  offices are located at 371 Bel Marin Keys  Boulevard,
Suite  210,  Novato,  CA 94949  and our  telephone  number  is  (415)  884-6700.
"BioMarin,"  "Aryplase,"  "Neutralase"  and "Vibrilase" are our trademarks.  All
other  trademarks or trade names referred to in this prospectus are the property
of   their   respective   owners.   Information   contained   in  our   website,
www.biomarinpharm.com, is not part of this prospectus.


                                       2




                                  THE OFFERING


                                                              


Common stock offered by this prospectus........................   2,500,000 shares

Common stock outstanding after the offering....................   54,579,935 shares

Use of proceeds................................................   For  operating  expenses,   capital   expenditures  and  working
                                                                  capital needs,  including  costs  associated with the regulatory
                                                                  approval,  manufacturing,  and  potential  commercialization  of
                                                                  Aldurazyme;  for our research and development activities related
                                                                  to our  pipeline  products  including  Neutralase,  Aryplase and
                                                                  Vibrilase;   and  other  general  corporate  purposes.  We  will
                                                                  receive   proceeds   from  the  sale  of  the  shares  to  Acqua
                                                                  Wellington as described in the Plan of Distribution  but we will
                                                                  receive no proceeds  from any  subsequent  sale of the shares by
                                                                  Acqua Wellington.  See "Use of Proceeds."

Nasdaq National Market and SWX New Market symbol...............   BMRN



The number of shares of common stock outstanding after this offering is based on
the number of shares  outstanding  as of September  16, 2002 and assumes that we
have issued all of the shares of our common  stock  offered by this  prospectus,
but excludes:

        o      8,066,733 shares  subject to  options outstanding as of September
               16, 2002, at  a weighted  average  exercise  price of  $10.99 per
               share;

        o      779,846 additional shares  issuable upon  exercise of outstanding
               warrants,  at a  weighted  average  exercise price  of $13.35 per
               share;

        o      1,924,151 additional shares that  we could issue  under our stock
               option plans; and

        o      545,717 additional  shares that we could issue under our employee
               stock purchase plan.

We have previously issued 1,344,194 shares of our common stock pursuant to this
prospectus. These shares are included in the total 2,500,000 shares that may be
offered by this prospectus. Accordingly, as of the date of this prospectus, we
may issue an additional 1,155,806 shares of our common stock pursuant to this
prospectus.



                                       3




                                  RISK FACTORS

An investment in our common stock  involves a high degree of risk. We operate in
a dynamic  and  rapidly  changing  industry  that  involves  numerous  risks and
uncertainties. Before purchasing these securities, you should carefully consider
the  following  risk  factors,  as well as other  information  contained in this
prospectus or  incorporated  by reference into this  prospectus,  to evaluate an
investment  in  the  securities  offered  by  this  prospectus.  The  risks  and
uncertainties  described  below are not the only ones we face.  Other  risks and
uncertainties,  including those that we do not currently consider material,  may
impair our business.  If any of the risks discussed  below actually  occur,  our
business,  financial  condition,  operating  results  or  cash  flows  could  be
materially adversely affected.  This could cause the trading price of our common
stock to decline, and you may lose all or part of your investment.

If we continue to incur operating  losses for a period longer than  anticipated,
we may be unable to continue our  operations at planned  levels and be forced to
reduce or discontinue operations.

We are in an early stage of development and have operated at a net loss since we
were  formed.  Since we began  operations  in March 1997,  we have been  engaged
primarily in research and development. We have no sales revenues from any of our
product  candidates.  As of June 30,  2002,  we had an  accumulated  deficit  of
approximately $189.1 million. We expect to continue to operate at a net loss for
the  foreseeable  future.  Our future  profitability  depends  on our  receiving
regulatory  approval of our product  candidates and our ability to  successfully
manufacture and market any approved  drugs,  either by ourselves or jointly with
others.  The extent of our future  losses  and the timing of  profitability  are
highly  uncertain.  If we fail to become  profitable  or are  unable to  sustain
profitability  on a  continuing  basis,  then we may be unable to  continue  our
operations.

If we fail to obtain the capital  necessary to fund our  operations,  we will be
unable to complete our product development programs.

In the  future,  we may need to raise  substantial  additional  capital  to fund
operations.  We may be unable to raise additional financing when needed due to a
variety of factors, including our financial condition, the status of our product
programs,  and the general  condition of the  financial  markets.  If we fail to
raise  additional  financing  as we need  such  funds,  we will have to delay or
terminate some or all of our product development programs.

We expect to continue to spend substantial amounts of capital for our operations
for the foreseeable  future.  The amount of capital we will need depends on many
factors, including:

        o      the  progress,  timing and  scope of our  preclinical studies and
               clinical trials;

        o      the time and cost necessary to obtain regulatory approvals;

        o      the time and cost  necessary to develop  commercial manufacturing
               processes,  including  quality  systems  and to  build or acquire
               manufacturing capabilities;

        o      the  time  and  cost  necessary to respond  to technological  and
               market developments; and

        o      any   changes  made   or  new   developments  in   our  existing
               collaborative,  licensing and  other commercial  relationships or
               any   new   collaborative,   licensing   and  other   commercial
               relationships that we may establish.

Moreover,   our  fixed  expenses  such  as  rent,  license  payments  and  other
contractual  commitments are substantial and will increase in the future.  These
fixed expenses will increase because we may enter into:

        o      additional leases for new facilities and capital equipment;

        o      additional licenses and collaborative agreements;

        o      additional   contracts  for   consulting,   maintenance  and
               administrative services; and

        o      additional contracts for product manufacturing.

                                       4


We believe that our cash, cash equivalents and short term investment  securities
balances at June 30, 2002 will be  sufficient  to meet our operating and capital
requirements  through  2003.  These  estimates  are  based  on  assumptions  and
estimates,  which may prove to be wrong.  As a result,  we may need or choose to
obtain additional financing during that time.

If we fail to obtain regulatory approval to commercially manufacture or sell any
of our future drug  products,  or if  approval is delayed,  we will be unable to
generate  revenue from the sale of our products,  our  potential for  generating
positive  cash flow will be  diminished  and the capital  necessary  to fund our
operations will be increased.

We must obtain regulatory approval before marketing or selling our drug products
in the U.S.  and in  foreign  jurisdictions.  In the U.S.,  we must  obtain  FDA
approval for each drug that we intend to commercialize. The FDA approval process
is typically  lengthy and  expensive,  and approval is never  certain.  Products
distributed  abroad are also subject to foreign government  regulation.  None of
our drug products has received regulatory  approval to be commercially  marketed
and sold. If we fail to obtain regulatory approval,  we will be unable to market
and  sell  our  drug  products.  Because  of  the  risks  and  uncertainties  in
biopharmaceutical  development,  our drug  products  could take a  significantly
longer  time to gain  regulatory  approval  than we  expect  or may  never  gain
approval. If regulatory approval is delayed, our management's  credibility,  and
the value of our company and our operating  results will be adversely  affected.
Additionally,  we will be  unable  to  generate  revenue  from  the  sale of our
products, our potential for generating positive cash flow will be diminished and
the capital necessary to fund our operations will be increased.

To obtain regulatory  approval to market our products,  preclinical  studies and
costly and  lengthy  clinical  trials will be  required,  and the results of the
studies and trials are highly uncertain.

As part of the regulatory approval process, we must conduct, at our own expense,
preclinical  studies in the laboratory on animals and clinical  trials on humans
for each drug product.  We expect the number of preclinical studies and clinical
trials that the regulatory  authorities  will require will vary depending on the
drug product,  the disease or condition  the drug is being  developed to address
and  regulations  applicable  to the  particular  drug.  We may need to  perform
multiple  preclinical studies using various doses and formulations before we can
begin clinical trials, which could result in delays in our ability to market any
of our drug  products.  Furthermore,  even if we  obtain  favorable  results  in
preclinical  studies on  animals,  the  results  in humans may be  significantly
different.

After we have conducted preclinical studies in animals, we must demonstrate that
our drug products are safe and  efficacious for use on the target human patients
in  order to  receive  regulatory  approval  for  commercial  sale.  Adverse  or
inconclusive  clinical results would stop us from filing for regulatory approval
of our drug products.  Additional factors that can cause delay or termination of
our clinical trials include:

        o      slow or insufficient patient enrollment;

        o      slow  recruitment of,  and completion  of necessary institutional
               approvals at clinical sites;

        o      longer treatment time required to demonstrate efficacy;

        o      lack of sufficient supplies of the product candidate;

        o      adverse medical events or side effects in treated patients;

        o      lack of effectiveness of the product candidate being tested; and

        o      regulatory requests for additional clinical trials.

Typically,  if a drug product is intended to treat a chronic disease,  as is the
case with some of the product candidates we are developing,  safety and efficacy
data must be gathered over an extended period of time,  which can range from six
months to three years or more.

                                       5


In May 2001, we completed a 24-month patient evaluation for the initial clinical
trial of our lead drug product,  Aldurazyme,  for the treatment of MPS I. Two of
the  original  ten  patients  enrolled in this trial died in 2000.  One of these
patients  received 103 weeks of Aldurazyme  treatment and the other received 137
weeks of treatment.  One of the original  forty-five  patients who completed the
Phase 3 clinical trial died after 16 weeks of the Phase 3 extension  study.  One
patient  treated  under a  single-patient  use protocol  died after 131 weeks of
Aldurazyme   treatment.   Based  on  medical  data   collected   from   clinical
investigative  sites,  none of these cases  directly  implicated  treatment with
Aldurazyme as the cause of death. If cases of patient complications or death are
ultimately  attributed to Aldurazyme,  our chances of commercializing  this drug
would be seriously compromised.

The fast track designation for our product candidates may not actually lead to a
faster  review  process  and a delay in the review  process or  approval  of our
products  will delay revenue from the sale of the products and will increase the
capital necessary to fund these programs.

Aldurazyme  and Aryplase  (our drug  candidate for the treatment of MPS VI) have
obtained fast track designations, which provides certain advantageous procedures
and  guidelines  with  respect  to the  review  by the FDA of the BLA for  these
products and which may result in our receipt of an initial response from the FDA
earlier  than would be received if these  products had not received a fast track
designation.  However, these procedures and guidelines do not guarantee that the
total review  process will be faster or that  approval  will be obtained,  if at
all,  earlier than would be the case if the products had not received fast track
designation.  If the review  process or approval for either  product is delayed,
realizing  revenue from the sale of the products will be delayed and the capital
necessary to fund these programs will be increased.

We will not be able to sell our products if we fail to comply with manufacturing
regulations.

Before we can begin  commercial  manufacture  of our  products,  we must  obtain
regulatory approval of our manufacturing  facilities and processes. In addition,
manufacture  of our drug  products  must  comply  with the  FDA's  current  Good
Manufacturing   Practices   regulations,   commonly  known  as  cGMP.  The  cGMP
regulations  govern quality control and  documentation  policies and procedures.
Our manufacturing  facilities are continuously subject to inspection by the FDA,
the State of California  and foreign  regulatory  authorities,  before and after
product approval. Our Galli Drive and our Bel Marin Keys Boulevard manufacturing
facilities  have been  inspected  and  licensed by the State of  California  for
clinical pharmaceutical manufacture. Due to the complexity of the processes used
to manufacture our products,  we may be unable to pass federal or  international
regulatory  inspections in a cost  effective  manner.  For the same reason,  any
potential third party  manufacturer of our drug products may be unable to comply
with cGMP regulations in a cost effective manner.

We must pass federal,  state and European  regulatory  inspections,  and we must
manufacture process  qualification  batches to final  specifications  under cGMP
controls for each of our drug products before the marketing  applications can be
approved.   Although  we  have  completed  process   qualification  batches  for
Aldurazyme,  these batches may be rejected by the regulatory authorities, and we
may be unable to  manufacture  the process  qualification  batches for our other
products or pass the inspections in a timely manner, if at all.

If we fail to obtain  orphan  drug  exclusivity  for some of our  products,  our
competitors may sell products to treat the same conditions and our revenues will
be reduced.

As part of our  business  strategy,  we intend to develop some drugs that may be
eligible  for FDA and  European  Community  orphan drug  designation.  Under the
Orphan  Drug Act,  the FDA may  designate a product as an orphan drug if it is a
drug  intended  to treat a rare  disease  or  condition,  defined  as a  patient
population  of less than  200,000 in the United  States.  The company that first
obtains FDA  approval  for a  designated  orphan  drug for a given rare  disease
receives marketing exclusivity for use of that drug for the stated condition for
a period of seven years.  However,  different drugs can be approved for the same
condition.  Similar  regulations are available in the European  Community with a
ten-year period of market exclusivity.

Because  the  extent and scope of patent  protection  for our drug  products  is
limited, orphan drug designation is particularly important for our products that
are eligible  for orphan drug  designation.  We plan to rely on the  exclusivity
period under the orphan drug designation to maintain a competitive  position. If
we do not obtain orphan drug  exclusivity  for our drug  products,  which do not
have patent protection, our competitors may then sell the same drug to treat the
same condition.

                                       6


Even though we have obtained orphan drug  designation for certain of our product
candidates and even if we obtain orphan drug  designation  for other products we
develop,  due to the  uncertainties  associated with  developing  pharmaceutical
products,  we may not be the first to obtain  marketing  approval for any orphan
indication or, if we are the first, that exclusivity  would effectively  protect
the product  from  competition.  Orphan drug  designation  neither  shortens the
development  time or  regulatory  review  time of a drug nor  gives the drug any
advantage in the regulatory review or approval process.

Because the target patient  populations  for some of our products are small,  we
must achieve significant market share and obtain high per patient prices for our
products to achieve profitability.

Two of our lead drug candidates,  Aldurazyme and Aryplase,  target diseases with
small  patient  populations.  As  a  result,  our  per-patient  prices  must  be
relatively  high  in  order  to  recover  our  development   costs  and  achieve
profitability.  Aldurazyme  targets  patients  with MPS I and  Aryplase  targets
patients with MPS VI. We estimate that there are  approximately  3,400  patients
with MPS I and 1,100  patients  with MPS VI in the developed  world.  We believe
that we will need to market  worldwide to achieve  significant  market share. In
addition,  we are developing other drug candidates to treat conditions,  such as
other genetic diseases and serious burn wounds, with small patient  populations.
Due to the expected costs of treatment for  Aldurazyme  and Aryplase,  we may be
unable to obtain  sufficient  market share for our drug products at a price high
enough to justify our product development efforts.

If we fail to obtain an adequate level of reimbursement for our drug products by
third-party  payers, the sales of our drugs would be adversely affected or there
may be no commercially viable markets for our products.

The  course  of  treatment  for  patients  with MPS I using  Aldurazyme  and for
patients  with MPS VI using  Aryplase  is expected  to be  expensive.  We expect
patients  to need  treatment  throughout  their  lifetimes.  We expect that most
families  of  patients  will  not  be  capable  of  paying  for  this  treatment
themselves.  There  will be no  commercially  viable  market for  Aldurazyme  or
Aryplase without  reimbursement from third-party payers.  Additionally,  even if
there is a commercially  viable market,  if the level of  reimbursement is below
our expectations, our revenue and gross margins will be adversely effected.

Third-party  payers,  such  as  government  or  private  health  care  insurers,
carefully  review  and  increasingly  challenge  the prices  charged  for drugs.
Reimbursement  rates from private  companies vary  depending on the  third-party
payer,  the  insurance  plan  and  other  factors.   Reimbursement   systems  in
international   markets  vary  significantly  by  country  and  by  region,  and
reimbursement approvals must be obtained on a country-by-country basis.

We currently have no expertise obtaining reimbursement. We expect to rely on the
expertise of our joint venture partner, Genzyme, to obtain reimbursement for the
costs of Aldurazyme.  In addition, we will need to develop our own reimbursement
expertise for future drug candidates  unless we enter into  collaborations  with
other  companies  with  the  necessary  expertise.  We will  not  know  what the
reimbursement  rates  will be until we are ready to market  the  product  and we
actually  negotiate  the  rates.  If we are unable to obtain  sufficiently  high
reimbursement  rates, our products may not be commercially  viable or our future
revenues and gross margins may be adversely affected.

We expect that, in the future,  reimbursement  will be  increasingly  restricted
both in the United States and  internationally.  The  escalating  cost of health
care has led to increased  pressure on the health care industry to reduce costs.
Governmental  and private  third-party  payers have proposed health care reforms
and cost reductions. A number of federal and state proposals to control the cost
of health  care,  including  the cost of drug  treatments  have been made in the
United States.  In some foreign  markets,  the  government  controls the pricing
which would affect the profitability of drugs.  Current  government  regulations
and possible future legislation  regarding health care may affect  reimbursement
for medical treatment by third-party  payers,  which may render our products not
commercially  viable or may  adversely  affect  our  future  revenues  and gross
margins.

If we are unable to protect our  proprietary  technology,  we may not be able to
compete as effectively.

Where  appropriate,  we  seek  patent  protection  for  certain  aspects  of our
technology.  Patent  protection  may not be available for some of the enzymes we
are  developing.  If we must spend  significant  time and money  protecting  our
patents,  designing around patents held by others or licensing,  for large fees,
patents or other proprietary  rights held by others,  our business and financial
prospects may be harmed.

                                       7


The patent  positions of biotechnology  products are complex and uncertain.  The
scope and extent of patent  protection for some of our products are particularly
uncertain  because key  information on some of the enzymes we are developing has
existed in the public domain for many years.  Other  parties have  published the
structure of the enzymes,  the methods for purifying or producing the enzymes or
the methods of treatment. The composition and genetic sequences of animal and/or
human versions of many of our enzymes have been published and are believed to be
in the public domain. The composition and genetic sequences of other MPS enzymes
that we intend to develop as products have also been  published.  Publication of
this  information may prevent us from obtaining  composition-of-matter  patents,
which are  generally  believed to offer the  strongest  patent  protection.  For
enzymes with no prospect of broad composition-of-matter  patents, other forms of
patent  protection  or orphan  drug  status may  provide  us with a  competitive
advantage.  As a result of these  uncertainties,  investors  should  not rely on
patents as a means of protecting our product candidates, including Aldurazyme.

We own or license  patents  and patent  applications  to certain of our  product
candidates.  However,  these patents and patent  applications  do not ensure the
protection of our intellectual property for a number of other reasons, including
the following:

        o      We  do not know  whether  our patent  applications will result in
               issued patents. For example,  we may not  have developed a method
               for treating a disease before others developed similar methods.

        o      Competitors  may interfere  with our patent  process in a variety
               of ways.  Competitors may  claim that  they  invented the claimed
               invention  prior to  us.  Competitors may also  claim that we are
               infringing  on  their patents  and therefore  cannot practice our
               technology as  claimed under  our patent.  Competitors  may  also
               contest  our  patents  by showing  the patent  examiner  that the
               invention  was not  original, was  not novel  or was  obvious. In
               litigation, a competitor could claim that our issued patents  are
               not valid for a number of  reasons. If a court  agrees,  we would
               lose that patent. As a company, we have no  meaningful experience
               with   competitors  interfering   with   our  patents  or  patent
               applications.

        o      Enforcing patents is expensive and may absorb significant time of
               our management. Management would spend less time and resources on
               developing  products,  which  could  increase  our  research  and
               development expense and delay product programs.

        o      Receipt of a patent may not provide much practical protection. If
               we receive a patent with  a narrow scope,  then it will be easier
               for competitors to design  products that do  not infringe  on our
               patent.

In addition,  competitors also seek patent protection for their technology.  Due
to the number of patents in our field of  technology,  we cannot be assured that
we do not  infringe  on those  patents or that we will not  infringe  on patents
granted in the future.  If a patent  holder  believes  our product  infringes on
their  patent,  the  patent  holder may sue us even if we have  received  patent
protection  for our  technology.  If someone  else  claims we  infringe on their
technology, we would face a number of issues, including the following:

        o      Defending  a  lawsuit  takes  significant  time  and can  be very
               expensive.

        o      If  the   court  decides  that  our  product   infringes  on  the
               competitor's patent,  we may have  to pay substantial damages for
               past infringement.

        o      The court may prohibit us from  selling or licensing the  product
               unless the  patent holder  licenses the patent to us.  The patent
               holder is not  required to  grant us a  license. If a  license is
               available,  we may  have to  pay substantial  royalties  or grant
               cross-licenses to our patents.

        o      Redesigning  our  product  so it  does  not infringe  may  not be
               possible or could require substantial funds and time.

It is also unclear whether our trade secrets are adequately protected.  While we
use  reasonable  efforts  to  protect  our  trade  secrets,   our  employees  or
consultants  may  unintentionally  or  willfully  disclose  our  information  to
competitors. Enforcing a claim that someone else illegally obtained and is using
our trade secrets, like patent litigation,  is expensive and time consuming, and
the outcome is unpredictable.  In addition, courts outside the United States are
sometimes  less  willing  to  protect  trade  secrets.   Our   competitors   may
independently develop equivalent knowledge, methods and know-how.

                                       8


We may  also  support  and  collaborate  in  research  conducted  by  government
organizations  or  by   universities.   These   government   organizations   and
universities  may be unwilling to grant us any exclusive rights to technology or
products  derived  from  these   collaborations   prior  to  entering  into  the
relationship.  If we do  not  obtain  required  licenses  or  rights,  we  could
encounter delays in product  development while we attempt to design around other
patents or even be prohibited from developing, manufacturing or selling products
requiring these licenses. There is also a risk that disputes may arise as to the
rights to technology or products developed in collaboration with other parties.

The United  States  Patent  and  Trademark  Office  has issued two  patents to a
non-related  party that relate to  (alpha)-L-iduronidase.  If we are not able to
successfully  challenge  these  patents,  we may  be  prevented  from  producing
Aldurazyme unless and until we obtain a license.

The United  States  Patent and  Trademark  Office  has issued two  patents  that
include   composition-of-matter   and   method-of-use   claims  for  recombinant
(alpha)-L-iduronidase.   Our  lead  drug  product,   Aldurazyme,   is  based  on
recombinant (alpha)-L-iduronidase.  We believe that these patents are invalid on
a number  of  grounds.  A  corresponding  patent  application  was  filed in the
European   Patent  Office   claiming   composition-of-matter   for   recombinant
(alpha)-L-iduronidase,  and it was  rejected  over prior art and  withdrawn  and
cannot be re-filed.  Nonetheless, under U.S. law, issued patents are entitled to
a  presumption  of  validity,  and our  challenges  to the U.S.  patents  may be
unsuccessful.  Even if we are successful,  challenging  the U.S.  patents may be
expensive,  require our management to devote significant time to this effort and
may delay commercialization of Aldurazyme in the United States.

The patent  holder has granted an  exclusive  license for  products  relating to
these  patents  to one of our  competitors.  If we are  unable  to  successfully
challenge  the  patents,  we may be unable to produce  Aldurazyme  in the United
States,  despite the issuance of U.S. Patent No. 6,426,208  covering  Aldurazyme
for the  treatment of MPS I unless we can obtain a  sublicense  from the current
licensee. The current licensee is not required to grant us a license and even if
a license is available, we may have to pay substantial license fees, which could
adversely affect our business and operating results.

If our joint  venture  with  Genzyme  were  terminated,  we could be barred from
commercializing  Aldurazyme or our ability to commercialize  Aldurazyme would be
delayed or diminished.

We are relying on Genzyme to apply the  expertise it has  developed  through the
launch and sale of other  enzyme-based  products to the marketing of our initial
drug product,  Aldurazyme. We have no experience selling, marketing or obtaining
reimbursement for pharmaceutical products. In addition, without Genzyme we would
be required to pursue  foreign  regulatory  approvals.  We have no experience in
seeking foreign regulatory approvals.

Either  BioMarin  or Genzyme  may  terminate  the joint  venture  for  specified
reasons,  including if the other party is in material breach of the agreement or
has  experienced a change of control or has declared  bankruptcy  and also is in
breach of the  agreement.  Although  BioMarin is not  currently in breach of the
joint  venture  agreement and we believe that Genzyme is not currently in breach
of the joint venture  agreement,  there is a risk that either party could breach
the agreement in the future.  Either party may also terminate the agreement upon
one-year prior written notice for any reason.  Furthermore, we may terminate the
joint venture if Genzyme fails to fulfill its  contractual  obligation to pay us
$12.1 million in cash upon the approval of the BLA for Aldurazyme.

If the joint venture is terminated for breach, the non-breaching  party would be
granted,   exclusively,  all  of  the  rights  to  Aldurazyme  and  any  related
intellectual property and regulatory approvals and would be obligated to buy out
the breaching  party's  interest in the joint  venture.  If we are the breaching
party,  we would  lose our rights to  Aldurazyme  and the  related  intellectual
property and regulatory  approvals.  If the joint venture is terminated  without
cause,  the  non-terminating  party would have the option,  exercisable  for one
year,  to buy out the  terminating  party's  interest  in the joint  venture and
obtain all rights to Aldurazyme exclusively.  In the event of termination of the
buy out option without exercise by the non-terminating party as described above,
all right and title to Aldurazyme is to be sold to the highest bidder,  with the
proceeds to be split equally between Genzyme and us.

If the joint venture is  terminated  by either party because the other  declared
bankruptcy and is also in breach of the agreement,  the terminating  party would
be  obligated  to buy out the other and would  obtain all  rights to  Aldurazyme
exclusively.  If the joint  venture is  terminated  by a party because the other
party  experienced a change of control,  the terminating  party shall notify the
other party, the offeree, of its intent to buy out the offeree's interest in the
joint  venture  for a  stated  amount  set  by  the  terminating  party  at  its
discretion.  The offeree must then either  accept this offer or agree to buy the
terminating party's interest in the joint venture on those same terms. The party
who buys out the other would then have exclusive rights to Aldurazyme.

                                       9


If we were obligated,  or given the option, to buy out Genzyme's interest in the
joint  venture,  and  gain  exclusive  rights  to  Aldurazyme,  we may not  have
sufficient  funds to do so and we may not be able to obtain the  financing to do
so.  If we fail to buy out  Genzyme's  interest  we may be held in breach of the
agreement  and may lose any claim to the rights to  Aldurazyme  and the  related
intellectual  property and regulatory  approvals.  We would then  effectively be
prohibited from developing and commercializing the product.

Termination  of the joint  venture in which we retain  the rights to  Aldurazyme
could  cause us  significant  delays in  product  launch in the  United  States,
difficulties  in obtaining  third-party  reimbursement  and delays or failure to
obtain  foreign  regulatory  approval,  any of which could hurt our business and
results of operations.  Since Genzyme funds 50% of the joint venture's operating
expenses, the termination of the joint venture would double our financial burden
and reduce the funds available to us for other product programs.

If we are unable to manufacture  our drug products in sufficient  quantities and
at  acceptable  cost,  we may be unable to meet demand for our products and lose
potential revenues or have reduced margins.

Although we have successfully manufactured Aldurazyme at commercial scale within
our cost parameters,  due to the complexity of manufacturing our products we may
not  be  able  to  manufacture  any  other  drug  product  successfully  with  a
commercially  viable  process  or at a  scale  large  enough  to  support  their
respective commercial markets or at acceptable margins.

Our  manufacturing  processes  may  not  meet  initial  expectations  and we may
encounter  problems with any of the following  measurements of performance if we
attempt to increase the scale or size or improve the commercial viability of our
manufacturing processes:

        o     design, construction and qualification of manufacturing facilities
              that meet regulatory requirements;

        o     schedule;

        o     reproducibility;

        o     production yields;

        o     purity;

        o     costs;

        o     quality control and assurance systems;

        o     shortages of qualified personnel; and

        o     compliance with regulatory requirements.

Improvements in manufacturing  processes typically are very difficult to achieve
and are  often  very  expensive  and may  require  extended  periods  of time to
develop. If we contract for manufacturing services with an unproven process, our
contractor is subject to the same  uncertainties,  high standards and regulatory
controls.

The  availability  of suitable  contract  manufacturing  at scheduled or optimum
times is not  certain.  The  cost of  contract  manufacturing  is  greater  than
internal  manufacturing  and therefore our  manufacturing  processes  must be of
higher productivity to yield equivalent margins.

                                       10


The manufacture of Neutralase  involves the fermentation of a bacterial species.
We have never used a  bacterial  production  process for the  production  of any
commercial product.  IBEX Technologies Inc., from which we acquired  Neutralase,
had contracted  with a third party for the manufacture of the Neutralase used in
prior  clinical  trials.  We have  also  contracted  with a third  party for the
manufacture of additional quantities of Neutralase.

We have built-out  approximately 51,800 square feet at our Novato facilities for
manufacturing  capability for Aldurazyme and Aryplase  including related quality
control laboratories,  materials  capabilities,  and support areas. We expect to
add additional  capabilities in stages over time, which could create  additional
operational complexity and challenges.  We expect that the manufacturing process
of all of our new drug products,  including  Aryplase,  will require significant
time and  resources  before  we can  begin  to  manufacture  them (or have  them
manufactured by third parties) in commercial quantity at acceptable cost.

In  order to  achieve  our  product  cost  targets,  we must  develop  efficient
manufacturing processes either by:

        o      improving the product yield from our current cell lines, colonies
               of cells which have a common genetic makeup;

        o      improving the manufacturing processes licensed from others; or

        o      developing  more efficient, lower cost recombinant cell lines and
               production processes.

A recombinant cell line is a cell line with foreign DNA inserted that is used to
produce an enzyme or other  protein that it would not have  otherwise  produced.
The  development of a stable,  high production cell line for any given enzyme is
difficult, expensive and unpredictable and may not result in adequate yields. In
addition, the development of protein purification processes is difficult and may
not produce the high purity required with acceptable  yield and costs or may not
result in  adequate  shelf-lives  of the final  products.  If we are not able to
develop  efficient  manufacturing  processes,  the  investment in  manufacturing
capacity sufficient to satisfy market demand will be much greater and will place
heavy  financial  demands upon us. If we do not achieve our  manufacturing  cost
targets,  we will have lower  margins and reduced  profitability  in  commercial
production and larger losses in manufacturing start-up phases.

If we are unable to create marketing and  distribution  capabilities or to enter
into  agreements  with third parties to do so, our ability to generate  revenues
will be diminished.

If we  cannot  expand  capabilities  either  by  developing  our own  sales  and
marketing  organization or by entering into  agreements  with others,  we may be
unable to successfully sell our products. We believe that developing an internal
sales  and  distribution  capability  will  be  expensive  and  time  consuming.
Alternatively,  we may enter into  agreements  with third  parties to market our
products.  For  example,  under our  joint  venture  with  Genzyme,  Genzyme  is
responsible  for marketing and  distributing  Aldurazyme.  However,  these third
parties may not be capable of successfully selling any of our drug products.

With our  acquisition  of  Neutralase  from IBEX  Technologies  Inc., we have an
enzyme product that has a significantly larger potential patient population than
Aldurazyme  and  Aryplase  and will be  marketed  and sold to  different  target
audiences with different therapeutic and financial  requirements and needs. As a
result,  we  will  be  competing  with  other   pharmaceutical   companies  with
experienced  and  well-funded  sales and marketing  operations  targeting  these
specific  physician and institutional  audiences.  We may not be able to develop
our own sales and  marketing  force at all,  or of a size that would allow us to
compete  with  these  other  companies.  If we elect to enter  into  third-party
marketing and  distribution  agreements in order to sell into these markets,  we
may not be able to enter into these  agreements on acceptable  terms, if at all.
If we cannot compete  effectively in these specific  physician and institutional
markets, it would adversely affect sales of Neutralase.

If we fail to compete  successfully  with  respect to product  sales,  we may be
unable to  generate  sufficient  sales to recover  our  expenses  related to the
development of a product program or to justify continued marketing of a product.

Our  competitors  may develop,  manufacture  and market  products  that are more
effective or less expensive than ours. They may also obtain regulatory approvals
for their products faster than we can obtain them (including those products with
orphan drug  designation)  or  commercialize  their products  before we do. With
respect  to  Aldurazyme   and   Aryplase,   if  our   competitors   successfully
commercialize a product that treats MPS I or MPS VI, respectively, before we do,
we may  effectively be precluded from developing a product to treat that disease
because the patient  populations  of the  diseases  are so small.  If one of our
competitors gets orphan drug  exclusivity,  we could be precluded from marketing
our  version for seven years in the U.S.  and ten years in the  European  Union.
However,  different drugs can be approved for the same  condition.  If we do not
compete  successfully,  we may be unable to generate sufficient sales to recover
our  expenses  related  to the  development  of a product  program or to justify
continued marketing of a product.

                                       11


If we fail to compete  successfully with respect to acquisitions,  joint venture
and other  collaboration  opportunities,  we may be  limited  in our  ability to
develop new products and to continue to expand our product pipeline.

Our competitors compete with us to attract organizations for acquisitions, joint
ventures,  licensing  arrangements or other collaborations.  To date, several of
our  product  programs  have been  acquired  through  acquisitions,  such as the
programs  acquired  from IBEX and Synapse,  and several of our product  programs
have been developed  through  licensing or collaborative  arrangements,  such as
Aldurazyme and Vibrilase.  These  collaborations  include licensing  proprietary
technology from, and other relationships with academic research institutions. If
our  competitors  successfully  enter into  partnering  arrangements  or license
agreements with academic research  institutions,  we will then be precluded from
pursuing  those specific  opportunities.  Since each of these  opportunities  is
unique,  we may not be able to find a  substitute.  Several  pharmaceutical  and
biotechnology  companies  have already  established  themselves  in the field of
enzyme  therapeutics,  including  Genzyme,  our  joint  venture  partner.  These
companies have already begun many drug development  programs,  some of which may
target  diseases  that we are also  targeting,  and have  already  entered  into
partnering  and  licensing  arrangements  with academic  research  institutions,
reducing the pool of available opportunities.

Universities and public and private  research  institutions are also competitors
with us. While these organizations  primarily have educational or basic research
objectives,  they may develop proprietary technology and acquire patents that we
may need for the  development of our drug  products.  We will attempt to license
this proprietary technology,  if available.  These licenses may not be available
to us on acceptable  terms, if at all. If we are unable to compete  successfully
with   respect  to   acquisitions,   joint   venture  and  other   collaboration
opportunities,  we may be limited in our ability to develop new  products and to
continue to expand our product pipeline.

If we do not  achieve  our  projected  development  goals in the time  frames we
announce and expect,  the  commercialization  of our products may be delayed and
the  credibility of our  management may be adversely  affected and, as a result,
our stock price may decline.

For planning  purposes,  we estimate the timing of the accomplishment of various
scientific,  clinical,  regulatory and other product development goals, which we
sometimes refer to as milestones.  These milestones may include the commencement
or completion of scientific  studies and clinical  trials and the  submission of
regulatory filings.  From time to time, we publicly announce the expected timing
of some of these  milestones.  All of these milestones are based on a variety of
assumptions.  The  actual  timing  of these  milestones  can  vary  dramatically
compared to our estimates,  in many cases for reasons beyond our control.  If we
do not meet these milestones as publicly announced, the commercialization of our
products may be delayed and the  credibility  of our management may be adversely
affected and, as a result, our stock price may decline.

If we fail to manage  our growth or fail to recruit  and retain  personnel,  our
product development programs may be delayed.

Our rapid growth has strained our managerial,  operational,  financial and other
resources.  We expect  this growth to  continue.  We have  entered  into a joint
venture with Genzyme.  If we receive FDA and/or foreign  government  approval to
market  Aldurazyme,  the joint  venture  will be required  to devote  additional
resources to support the commercialization of Aldurazyme.

To manage expansion effectively,  we need to continue to develop and improve our
research and development  capabilities,  manufacturing  and quality  capacities,
sales and marketing  capabilities and financial and administrative  systems. Our
staff, financial resources, systems, procedures or controls may be inadequate to
support our operations  and our management may be unable to manage  successfully
future market  opportunities or our relationships with customers and other third
parties.

Our future growth and success depend on our ability to recruit,  retain,  manage
and motivate our employees. The loss of key scientific, technical and managerial
personnel may delay or otherwise harm our product development programs. Any harm
to our research and development programs would harm our business and prospects.

                                       12


Because of the specialized  scientific and managerial nature of our business, we
rely  heavily  on our  ability  to  attract  and  retain  qualified  scientific,
technical and managerial personnel. In particular, the loss of Fredric D. Price,
our Chairman and Chief Executive  Officer,  or Emil D. Kakkis,  M.D., Ph.D., our
Senior Vice President of Scientific Affairs or Christopher M. Starr,  Ph.D., our
Senior Vice President for Research and  Development,  could be detrimental to us
if we cannot recruit suitable  replacements in a timely manner. While Mr. Price,
Dr.  Kakkis and Dr. Starr are parties to  employment  agreements  with us, these
agreements  do not  guarantee  that they  will  remain  employed  with us in the
future.  In addition,  these agreements do not restrict their ability to compete
with us after their  employment is  terminated.  The  competition  for qualified
personnel  in the  biopharmaceutical  field  is  intense.  Due to  this  intense
competition,  we may be unable to  continue  to  attract  and  retain  qualified
personnel necessary for the development of our business.

Changes in methods of treatment of disease could reduce demand for our products.

Even if our drug products are approved, doctors must use treatments that require
using those products. If doctors elect a different course of treatment from that
which includes our drug products, this decision would reduce demand for our drug
products.

Examples  include the potential use in the future of effective  gene therapy for
the treatment of genetic diseases.  The use of gene therapy could  theoretically
reduce or  eliminate  the use of enzyme  replacement  therapy  in MPS  diseases.
Sometimes,  this change in treatment method can be caused by the introduction of
other  companies'  products or the  development of new  technologies or surgical
procedures  which may not directly  compete with ours, but which have the effect
of changing how doctors  decide to treat a disease.  For example,  Neutralase is
being  developed  for heparin  reversal in coronary  artery  bypass graft (CABG)
surgery. It is possible that alternative  non-surgical methods of treating heart
disease could be developed.  If so, then the demand for Neutralase  would likely
decrease.

If product liability lawsuits are successfully  brought against us, we may incur
substantial liabilities.

We are exposed to the potential product liability risks inherent in the testing,
manufacturing and marketing of human  pharmaceuticals.  The BioMarin/Genzyme LLC
maintains product liability insurance for our clinical trials of Aldurazyme with
aggregate  loss  limits of $5.0  million.  We have  obtained  insurance  against
product liability  lawsuits for the clinical trials for Aryplase,  Vibrilase and
Neutralase with aggregate loss limits of $8.0 million.  Pharmaceutical companies
must balance the cost of insurance with the level of coverage based on estimates
of potential  liability.  Historically,  the potential liability associated with
product liability lawsuits for pharmaceutical  products has been  unpredictable.
Although we believe that our current  insurance is a reasonable  estimate of our
potential  liability and represents a commercially  reasonable  balancing of the
level of coverage as compared to the cost of the insurance, we may be subject to
claims in connection with our current clinical trials for Aldurazyme,  Aryplase,
Vibrilase  and  Neutralase  for  which  the  joint  venture's  or our  insurance
coverages are not adequate.

If  Aldurazyme,  Aryplase,  Vibrilase or Neutralase  receives FDA approval,  the
product  liability  insurance  the  joint  venture  or we will need to obtain in
connection  with the  commercial  sales of  Aldurazyme,  Aryplase  Vibrilase  or
Neutralase may be unavailable in meaningful  amounts or at a reasonable cost. In
addition,  while we take, and continue to take,  what we believe are appropriate
precautions,  we may be unable to avoid  significant  liability  if any  product
liability  lawsuit is brought  against us. If we are the subject of a successful
product  liability  claim that exceeds the limits of any  insurance  coverage we
obtain,  we may incur  substantial  liabilities  that would adversely affect our
earnings and require the commitment of capital resources that might otherwise be
available for the development and commercialization of our product programs.

Our stock price may be volatile,  and an  investment in our stock could suffer a
decline in value.

Our  valuation  and stock price since the beginning of trading after our initial
public  offering  have had no meaningful  relationship  to current or historical
earnings,  asset values, book value or many other criteria based on conventional
measures of stock value. The market price of our common stock will fluctuate due
to factors including:

        o      progress of Aldurazyme, Neutralase, Aryplase  and our  other lead
               drug   products   through  the   regulatory  process,  especially
               regulatory actions in the United States related to Aldurazyme;

                                       13


        o      results  of   clinical  trials,  announcements  of  technological
               innovations or new products by us or our competitors;

        o      government regulatory action affecting  our drug products  or our
               competitors' drug products in both the United States  and foreign
               countries;

        o      developments or disputes concerning patent or proprietary rights;

        o      general  market  conditions  and fluctuations  for  the  emerging
               growth and biopharmaceutical market sectors;

        o      economic conditions in the United States or abroad;

        o      actual or anticipated fluctuations in our operating results;

        o      broad  market  fluctuations  in the  United States  or in Europe,
               which  may  cause  the  market  price  of  our  common  stock  to
               fluctuate; and

        o      changes  in  company   assessments  or  financial   estimates  by
               securities analysts.

In addition, the value of our common stock may fluctuate because it is listed on
both the Nasdaq National Market and the Swiss Exchange's SWX New Market. Listing
on both exchanges may increase stock price volatility due to:

        o        trading in different time zones;

        o        different ability to buy or sell our stock;

        o        different market conditions in different capital markets; and

        o        different trading volume.

In the past,  following  periods of large price  declines  in the public  market
price of a company's  securities,  securities class action  litigation has often
been  initiated  against that  company.  Litigation of this type could result in
substantial costs and diversion of management's  attention and resources,  which
would hurt our business.  Any adverse  determination  in  litigation  could also
subject us to significant liabilities.

Anti-takeover provisions in our charter documents, our stockholder's rights plan
and under Delaware law may make an acquisition of us, which may be beneficial to
our stockholders, more difficult.

We are incorporated in Delaware.  Certain  anti-takeover  provisions of Delaware
law and our  charter  documents  as  currently  in  effect  may make a change in
control of our  company  more  difficult,  even if a change in control  would be
beneficial to the stockholders.  Our anti-takeover provisions include provisions
in the certificate of incorporation  providing that  stockholders'  meetings may
only be called by the board of directors and a provision in the bylaws providing
that the stockholders may not take action by written consent.  Additionally, our
board of directors has the authority to issue 249,886 shares of preferred  stock
and to determine the terms of those shares of stock  without any further  action
by the  stockholders.  Shortly after  completing  our  acquisition of all of the
outstanding  shares of GBL, we issued  113,676 shares of our Series A Non-Voting
Non-Convertible  Preferred Stock to GBL in connection with retiring the original
shares  of our  common  stock  held by GBL.  Our  board  of  directors  has also
authorized the issuance of 750,000  shares of our Series B Junior  Participating
Preferred  Stock in  connection  with the  stockholder's  rights plan  discussed
below.  The rights of holders of our common  stock are  subject to the rights of
the holders of any  preferred  stock that are or may be issued.  The issuance of
preferred  stock  could make it more  difficult  for a third  party to acquire a
majority  of  our  outstanding   voting  stock.   Delaware  law  also  prohibits
corporations from engaging in a business  combination with any holders of 15% or
more of their  capital stock until the holder has held the stock for three years
unless,  among  other  possibilities,   the  board  of  directors  approves  the
transaction.  Our board of directors may use these provisions to prevent changes
in the management and control of our company.  Also, under  applicable  Delaware
law, our board of directors may adopt additional  anti-takeover  measures in the
future.

On September 11, 2002, our board of directors  authorized a stockholder's rights
plan and related  dividend of one preferred  share purchase right for each share
of our common stock  outstanding at the close of business on September 23, 2002.
As long as these  rights are  attached  to our common  stock,  we will issue one
right with each new share of our  common  stock so that all shares of our common
stock will have attached rights.  When exercisable,  each right will entitle the
registered holder to purchase from us one one-hundredth of a share of our Series
B Junior Participating Preferred Stock at a price of $35.00 per one-hundredth of
a Preferred Share, subject to adjustment.

                                       14


The rights are designed to assure that all of our stockholders  receive fair and
equal treatment in the event of any proposed takeover of us and to guard against
partial tender offers,  open market  accumulations  and other abusive tactics to
gain control of us without paying all stockholders a control premium. The rights
will cause  substantial  dilution to a person or group that acquires 15% or more
of our stock on terms not approved by the our board of directors.  However,  the
rights  may have the  effect  of  making  an  acquisition  of us,  which  may be
beneficial to our stockholders, more difficult, and the existence of such rights
my prevent  or reduce the  likelihood  of a third  party  making an offer for an
acquisition of us.

The ability of our  stockholders  to recover against Arthur Andersen LLP, may be
limited because we have not been able to obtain,  after reasonable efforts,  the
reissued  reports of Arthur  Andersen with respect to the  financial  statements
included in this prospectus.

Our  audited  consolidated   financial  statements  and  the  audited  financial
statements  of  IBEX  Technologies  Inc./Technologies  IBEX  Inc.--  Therapeutic
Enzymes Division and Glyko  Biomedical Ltd.  incorporated by reference into this
prospectus  have been audited by Arthur  Andersen  LLP. We have not been able to
obtain,  after reasonable efforts,  the reissued reports of Arthur Andersen with
respect to the financial  statements included in this registration  statement of
which this  prospectus is a part because,  among other reasons,  the partner and
the  audit  manager  in  charge  of  auditing  our  company,  IBEX  Technologies
Inc./Technologies  IBEX Inc.-- Therapeutic Enzymes Division and Glyko Biomedical
Ltd. left Arthur Andersen and joined KPMG LLP effective May 9, 2002 and June 11,
2002,  respectively.  Therefore,  in reliance on Rule 437a promulgated under the
Securities  Act,  we have  dispensed  with the  requirement  to file  with  this
registration  statement and the reissued  report and consent of Arthur  Andersen
with respect to these financial  statements.  As a result, our stockholders will
not  be  able  to  recover  against  Arthur  Andersen  under  Section  11 of the
Securities  Act for any untrue  statement of a material fact  contained in these
financial  statements  or any  omissions to state a material fact required to be
stated  therein.  In  addition,  the  ability of Arthur  Andersen to satisfy any
claims properly  brought against it may be limited as a practical  matter due to
recent developments involving Arthur Andersen.

                                       15





                           FORWARD LOOKING STATEMENTS

This prospectus contains forward looking statements.  These statements relate to
future events or our future financial  performance.  We have identified  forward
looking  statements  in this  prospectus  using  words  such  as  "anticipates",
"believes,"  "could,"   "estimates,"   "expects,"   "intends,"  "may,"  "plans,"
"potential,"  "predicts,"  "should,"  or "will" or the negative of such terms or
other comparable terminology.  These statements are based on our beliefs as well
as  assumptions  we made using  information  currently  available to us. Because
these  statements  reflect our current views  concerning  future  events,  these
statements  involve  risks,   uncertainties,   and  assumptions.   These  risks,
uncertainties, assumptions and other factors, including the risks outlined under
"Risk Factors," that may cause our or our industry's  actual results,  levels of
activity,  performance or  achievements  to be materially  different from future
results,  levels of actual  activity,  performance or achievements  expressed or
implied by such forward looking statements.

Although we believe  that the  expectations  reflected  in the  forward  looking
statements  are  reasonable,  we  cannot  guarantee  future  results,  levels of
activity, performance or achievements. Moreover, neither we nor any other person
assumes responsibility for the accuracy and completeness of such statements.  We
are under no duty to update any of the forward looking statements after the date
of this prospectus to conform such statements to actual results, unless required
by law.

                                       16




                                 USE OF PROCEEDS

We cannot  guarantee  that we will receive any proceeds in connection  with this
offering.  We will  receive  the  proceeds  from any sale of the shares to Acqua
Wellington  as  described  in the Plan of  Distribution  but we will  receive no
proceeds from any subsequent sale of the shares by Acqua Wellington.

We intend to use any proceeds of this  offering,  together with other  available
funds, for the following purposes:

        o      To fund our share of costs associated with our joint venture with
               Genzyme for the development and commercialization  of Aldurazyme;

        o      To  fund  research and  development  including  clinical  trials,
               regulatory  processes,   process  development  and  scale-up  and
               start-up of manufacturing activities for our other pharmaceutical
               product programs, including Neutralase, Aryplase and Vibrilase;

        o      To   fund   research,  development,   clinical   and   commercial
               manufacturing facilities, including related equipment; and

        o      To fund general corporate purposes, including working capital.

A portion of the proceeds may also be used to acquire or invest in complementary
businesses or products or to obtain rights to use complementary technologies.

We may require  additional  funds in the 12-month period following this offering
to accelerate  product  programs or to undertake new  initiatives  or enter into
collaborative arrangements.

We have not  identified  precisely the amounts we plan to spend on each of these
areas or the timing of such expenditures.  Accordingly, our management will have
significant flexibility in applying such proceeds. The amounts actually expended
for each  purpose  may  vary  significantly  depending  upon  numerous  factors,
including  the amount and timing of the proceeds  from this  offering,  progress
with the regulatory approval, manufacturing and commercialization of Aldurazyme,
Neutralase,  Aryplase  and  Vibrilase  and progress  with our other  development
programs.  In addition,  expenditures will also depend upon the establishment of
additional collaborative  arrangements with other companies, the availability of
other financing and other factors.  Pending use for these or other purposes,  we
intend  to  invest  the  net   proceeds   of  this   offering   in   short-term,
investment-grade, interest-bearing securities.

We anticipate that we will be required to raise substantial  additional  capital
to continue to accelerate  product  programs or to undertake new  initiatives or
enter into collaborative arrangements.  Additional capital may be raised through
additional public or private financing, as well as collaborative  relationships,
borrowings and other available sources. See "Risk Factors - if we fail to obtain
the capital necessary to fund our operations,  we will be unable to complete our
product development programs."

                                       17


                              PLAN OF DISTRIBUTION

On August 15,  2001,  we entered  into what is  sometimes  termed an equity line
arrangement   with  Acqua   Wellington   North  American   Equities  Fund,  Ltd.
Specifically,  we entered  into a common  stock  purchase  agreement  with Acqua
Wellington,  which  provides  that,  subject  to  the  satisfaction  of  certain
conditions,  we may issue and sell and Acqua  Wellington  will be  obligated  to
purchase,  from time to time,  up to an aggregate of  $27,700,000  of our common
stock.  On September  24, 2002, we entered into an amendment to the common stock
purchase  agreement with Acqua Wellington to extend the term of this facility to
October 15, 2003.  In connection  with  entering into the common stock  purchase
agreement with Acqua Wellington North American Equities Fund, Ltd. on August 15,
2001, we terminated the common stock  purchase  agreement that we had previously
entered into with Acqua  Wellington  North American  Equities  Fund,  Ltd. dated
January 16, 2001.

On February 1, 2001,  we issued and sold  101,523  shares of our common stock to
Acqua  Wellington at a negotiated  price of $9.85 per share. On August 23, 2001,
we issued and sold 180,995  shares of our common stock to Acqua  Wellington at a
negotiated  price of $11.05  per share.  On October 2, 2001,  we issued and sold
208,340 shares of our common stock to Acqua  Wellington at a negotiated price of
$9.5997 per share. On October 16, 2001, we issued and sold 312,243 shares of our
common stock to Acqua  Wellington at a negotiated price of $9.6079 per share. On
October 31, 2001, we issued and sold 541,093 shares of our common stock to Acqua
Wellington at a negotiated  price of $10.1646 per share.  These 1,344,194 shares
were issued  pursuant to this prospectus and are included in the total 2,500,000
related to this prospectus. The total consideration of approximately $12,500,000
that we received from Acqua  Wellington for the shares we sold to them under the
common  stock  purchase  agreement  after  August  15,  2001  reduces  the total
remaining amount available under the facility to approximately  $15,200,000,  as
of the date of this prospectus.

At our discretion,  we may present Acqua  Wellington with draw down notices from
time to time, provided that there must be at least five trading days between the
end of each  pricing  period  and the  next  draw  down,  requiring  that  Acqua
Wellington  purchase  shares of our common  stock.  For each draw down,  we will
determine  the minimum sale price per share and the total dollar  amount of each
draw down,  subject to a limit of between $500,000 and $4,000,000  determined by
the minimum sale price of the draw down. Over a 20 trading day period,  for each
trading day the volume  weighted  average price for our common stock exceeds the
minimum  purchase  price,  Acqua  Wellington will be obligated to purchase a pro
rata  portion  of the total draw down  amount at a price per share  equal to the
volume  weighted  average  price of our common  stock less a discount of between
3.33% to 5%.

Additionally,  at our discretion, in connection with any draw down, we may issue
Acqua  Wellington  call  options of up to the amount of the draw down.  The call
options give Acqua Wellington the right, but not the obligation,  to purchase an
additional  amount of our common  stock  concurrent  with the draw  down.  Acqua
Wellington may exercise all or any  unexercised  portion of these options at any
time during the pricing  period of the draw down and for a purchase  price equal
to the volume weighted  average price of our common stock on the day of exercise
less a discount of 3.33% to 5%.

All of the  shares  purchased  under a draw  down and upon the  exercise  of any
related call options will be settled on the second  trading day after the end of
the related pricing period. Prior to each settlement,  we will file a prospectus
supplement that describes the number of shares being purchased and the price per
share.  The maximum  aggregate amount of common stock that Acqua Wellington will
be required to purchase  from us will not exceed an  aggregate  of  $27,700,000.
Additionally,  Acqua  Wellington  will have no obligation to purchase our common
stock if the volume weighted  average trading price of our common stock is below
$7.00 per share.

We have entered into a placement agent agreement with Reedland Capital Partners,
an Institutional  Division of Financial West Group, which is not affiliated with
either  Acqua  Wellington  or us,  pursuant to which the shares to be issued and
sold to Acqua  Wellington  will be placed  through  Reedland  Capital  Partners.
Reedland  Capital  Partners  is an  "underwriter"  within the meaning of Section
2(a)(11) of the  Securities  Act.  Pursuant to the terms of the placement  agent
agreement,  in  connection  with  each  draw  down and call  option  settlement,
Reedland  Capital Partners will receive a placement agent fee from us of between
0.67% to 1% of the dollar  amount of the shares  purchased.  The net proceeds we
receive  on each  settlement  will be 4% to 6% less  than  the  volume  weighted
average  price of our  common  stock  as a result  of the  total  effect  of the
placement agent fee and the discount to Acqua Wellington.

In addition to our offer and sale of shares of common stock to Acqua  Wellington
through  Reedland  Capital  Partners  pursuant  to the  purchase  and  placement
agreements,  this  prospectus  also  covers  the  offer  and sale of  shares  so
purchased from time to time by Acqua Wellington to the public.  Acqua Wellington
is an  "underwriter"  within the meaning of Section  2(a)(11) of the  Securities
Act.

                                       18


Acqua Wellington has informed us that it intends to use Carlin Equities Corp. as
the  broker-dealer  to offer and sell  shares of our common  stock on the Nasdaq
National Market. Such sales will be made on the Nasdaq National Market at prices
and at terms then  prevailing  or at prices  related to the then current  market
price.  Carlin Equities Corp. is an "underwriter"  within the meaning of Section
2(a)(11) of the  Securities  Act.  Acqua  Wellington has informed us that Carlin
Equities  Corp.,  which is not an  affiliate of Acqua  Wellington,  will receive
commissions  from Acqua  Wellington  which will not exceed  customary  brokerage
commissions.  Acqua Wellington also will pay other expenses  associated with the
sale of the common stock it acquires pursuant to the purchase agreement. Profits
on any resale of the common stock by Acqua  Wellington and commissions  received
by either Carlin Equities Corp. or Reedland Capital Partners may be deemed to be
underwriting discounts and commissions under the Securities Act.

The shares of common stock may be sold by Carlin  Equities  Corp. in one or more
of the following manners:

        o     ordinary   brokerage  transactions and  transactions in  which the
              broker solicits purchasers; or

        o     a block  trade  in  which  the  broker or  dealer so  engaged will
              attempt to sell the shares as  agent, but may position  and resell
              a portion of the block as principal to facilitate the transaction.

In addition,  Acqua  Wellington,  Reedland  Capital Partners and Carlin Equities
Corp.  will be subject to liability  under the federal  securities laws and must
comply with the  requirements of the Securities Act and the Securities  Exchange
Act of 1934, as amended, including without limitation,  Rule 415(a)(4) under the
Securities  Act and Rule 10b-5 and  Regulation M under the Exchange  Act.  These
rules and  regulations  may limit the timing of purchases and sales of shares of
common stock by Acqua  Wellington,  Reedland Capital Partners or Carlin Equities
Corp.  Under these rules and  regulations,  Acqua  Wellington,  Reedland Capital
Partners and Carlin Equities Corp.:

        o      may not engage in  any stabilization  activity in connection with
               our securities;

        o      must furnish each broker which offers shares of  our common stock
               covered by this  prospectus  with the  number of  copies of  this
               prospectus and any  prospectus supplement  which are required  by
               each broker; and

        o      may not  bid for or  purchase  any of  our securities  or attempt
               to induce any person to purchase any of our securities other than
               as permitted under the Exchange Act.

These restrictions may affect the marketability of the shares of common stock by
Acqua Wellington, Reedland Capital Partners and Carlin Equities Corp.

During the term of the purchase agreement,  Acqua Wellington may sell the shares
that it has the right to purchase pursuant to the purchase agreement,  but Acqua
Wellington  has  agreed  that it will not sell any other  shares  of our  common
stock.

The common stock offered hereby is being registered  pursuant to our contractual
obligations with Acqua Wellington,  and, in addition to the placement agent fees
described  above,  we have  agreed to pay the costs of  registering  the  shares
hereunder.  We have  also  agreed  to  reimburse  Acqua  Wellington's  costs and
expenses  incurred in connection  with the stock purchase  agreement,  including
fees,  expenses  and  disbursements  of  counsel  for Acqua  Wellington  for the
preparation of the stock purchase agreement up to a maximum of $15,000,  and all
reasonable  fees  incurred in connection  with any  amendment,  modification  or
waiver, to or enforcement of the stock purchase agreement.

In the  stock  purchase  agreement  with  Acqua  Wellington,  we have  agreed to
indemnify and hold harmless Acqua Wellington and Carlin Equities Corp., and each
person who controls either Acqua  Wellington or Carlin  Equities Corp.,  against
certain liabilities,  including  liabilities under the Securities Act, which may
be based upon,  among  other  things,  any untrue  statement  or alleged  untrue
statement of a material  fact or any omission or alleged  omission of a material
fact contained in any prospectus or any  prospectus  supplement,  unless made or
omitted in reliance upon written information  provided to us by Acqua Wellington
or Carlin  Equities Corp.,  respectively.  In the placement agent agreement with
Reedland  Capital  Partners,  we have  agreed  to  indemnify  and hold  harmless
Reedland  Capital  Partners,  and each  person  who  controls  Reedland  Capital
Partners,   against  certain  liabilities,   including   liabilities  under  the
Securities  Act,  which  may be based  upon,  among  other  things,  any  untrue
statement  or alleged  untrue  statement  of a material  fact or any omission or
alleged  omission  of a  material  fact  contained  in  any  prospectus  or  any
prospectus  supplement,   unless  made  or  omitted  in  reliance  upon  written
information provided to us by Reedland Capital Partners.

                                       19


                                  LEGAL MATTERS

For the purpose of this  offering,  Paul,  Hastings,  Janofsky & Walker LLP, Los
Angeles,  California is giving an opinion of the validity of the issuance of the
securities offered in this prospectus.


                                     EXPERTS

Our audited financial  statements for the year ended December 31, 2001, included
in our Annual  Report on Form 10-K,  the audited  financial  statements  of IBEX
Technologies Inc./Technologies IBEX Inc.-- Therapeutic Enzymes Division included
in our  Current  Report on Form  8-K/A,  as filed on  January  14,  2002 and our
Definitive  Proxy  Statement  dated  July 5,  2002,  and the  audited  financial
statements of Glyko Biomedical Ltd.,  included in our Definitive Proxy Statement
dated July 5, 2002,  which are  incorporated by reference in this prospectus and
elsewhere in the  registration  statement,  have been audited by Arthur Andersen
LLP,  independent public accountants,  as indicated in their report with respect
thereto.  After  reasonable  efforts,  we have not been able to obtain a current
consent of Arthur Andersen LLP to the inclusion of these  financial  statements,
and the related report of Arthur Andersen LLP, in this amendment. This inability
is because,  among other reasons, the partner and the audit manager in charge of
auditing us, IBEX Technologies Inc./Technologies IBEX Inc.-- Therapeutic Enzymes
Division  and Glyko  Biomedical  Ltd.  left Arthur  Andersen and joined KPMG LLP
effective May 9, 2002 and June 11, 2002, respectively. Therefore, in reliance on
Rule 437a of the Securities Act, the consent of Arthur Andersen  included herein
has not been reissued and Arthur Andersen LLP has not consented to the inclusion
of its report in this amendment to the registration  statement. As a result, our
stockholders  may not be able to  recover  against  Arthur  Andersen  LLP  under
Section 11 of the  Securities  Act for any untrue  statement of a material  fact
contained in these  financial  statements  or any  omissions to state a material
fact  required to be stated in these  financial  statements.  In  addition,  the
ability of Arthur Andersen LLP to satisfy claims properly brought against it may
be limited as a practical  matter due to recent  developments  involving  Arthur
Andersen LLP.

                                       20



                       WHERE YOU CAN FIND MORE INFORMATION

We are a reporting company and file annual, quarterly and current reports, proxy
statements  and  other  information  with the SEC.  You may read and copy  these
reports,  proxy  statements and other  information at the SEC's public reference
rooms in Washington,  D.C. You can request copies of these  documents by writing
to the SEC  and  paying  a fee for the  copying  cost.  Please  call  the SEC at
1-800-SEC-0330  for more information about the operation of the public reference
rooms.   Our  SEC  filings  are  also   available  at  the  SEC's  Web  site  at
"http://www.sec.gov."  In addition, you can read and copy our SEC filings at the
office of the National Association of Securities Dealers, Inc. at 1735 K Street,
Washington, D.C. 20006.

The SEC allows us to  "incorporate by reference"  information  that we file with
them, which means that we can disclose important information to you by referring
you  to  those  documents.  The  information  incorporated  by  reference  is an
important part of this  prospectus,  and information that we file later with the
SEC will  automatically  update and supersede  this  information.  Further,  all
filings we make under the Securities  Exchange Act of 1934 after the date of the
initial  registration  statement and prior to  effectiveness of the registration
statement shall be deemed to be incorporated by reference into this  prospectus.
We incorporate by reference the documents listed below and any future filings we
will make with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Securities
Exchange Act of 1934:

        1.     Our Annual  Report on Form  10-K for  the year ended December 31,
               2001, as amended by Form 10-K/A, as filed on April 30, 2002;

        2.     Our Quarterly  Report on  Form 10-Q for  the quarters ended March
               31, 2002 and June 30, 2002;

        3.     Our  Definitive Proxy  Statement  dated July 5, 2002,  as amended
               July 31, 2002, filed in connection  with our 2002 Annual  Meeting
               of Stockholders;

        4.     Our Current Report  of Form 8-K/A  filed  on January 14, 2002 and
               our Current  Reports on  Form 8-K, as  filed on  January 7, 2002,
               January 15, 2002; February 7, 2002; February 26, 2002;  March 21,
               2002; April 16, 2002; April 24,  2002; May 7, 2002; May 16, 2002;
               June 12, 2002, as amended and restated on June 18, 2002; June 24,
               2002; June 25, 2002; July 9, 2002; July 15, 2002; July  29, 2002;
               August 1, 2002;  August 2, 2002;  August 26, 2002;  September 13,
               2002; September 17, 2002 and September 30, 2002; and

        5.     The description of our  common stock  set forth  in our Form 8-A,
               filed with the  SEC on July 15,  1999 and the  description of our
               preferred share purchase rights  set forth in our Form 8-A, filed
               with the SEC on September 13, 2002.

We will  provide  to you at no  cost a copy  of any  and all of the  information
incorporated  by  reference  into  the  registration  statement  of  which  this
prospectus is a part.  You may make a request for copies of this  information in
writing or by telephone. Requests should be directed to:

                          BioMarin Pharmaceutical Inc.
                           Attention: Joshua A. Grass
                     371 Bel Marin Keys Boulevard, Suite 210
                                Novato, CA 94949
                                 (415) 884-6777

Any statement contained in a document  incorporated or deemed to be incorporated
by reference in this prospectus shall be deemed modified, superseded or replaced
for purposes of this prospectus to the extent that a statement contained in this
prospectus,  or in any  subsequently  filed  document  that also is deemed to be
incorporated by reference in this prospectus,  modifies,  supersedes or replaces
such statement.  Any statement so modified,  superseded or replaced shall not be
deemed,  except as so modified,  superseded or replaced,  to constitute  part of
this prospectus.

                                       21




                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

           Securities and Exchange Commission
           registration fee........................................   $14,457
           Legal fees and expenses.................................    50,000
           Accountants' fees and expenses..........................     7,500
           Miscellaneous...........................................     3,000
                                                                        -----
           Total...................................................   $74,957
                                                                       ======


The  foregoing  items,   except  for  the  Securities  and  Exchange  Commission
registration fee, are estimated.

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

Reference is made to the Amended and Restated  Certificate of Incorporation with
the  Registrant;  the  Bylaws of the  Registrant;  Section  145 of the  Delaware
General  Corporation  Law;  which,  among other  things,  and subject to certain
conditions,  authorize the Registrant to indemnify, or indemnify by their terms,
as the case may be, the directors and officers of the Registrant against certain
liabilities and expenses incurred by such persons in connection with claims made
by reason of their being such a director or officer. Pursuant to this authority,
the Registrant has entered into an indemnification  agreement with each director
and  executive  officer,   whereby  the  Registrant  has  agreed  to  cover  the
indemnification obligations.

The  Registrant   maintains   director's  and  officer's   insurance   providing
indemnification  against  certain  liabilities  for certain of the  Registrant's
directors, officers, affiliates, partners or employees.

The   indemnification   provisions   in  the   Registrant's   Bylaws,   and  the
indemnification agreements entered into between the Registrant and its directors
and executive officers,  may be sufficiently broad to permit  indemnification of
the Registrant's officers and directors for liabilities arising under the Act.

Reference is made to the following documents incorporated by reference into this
Registration Statement regarding relevant  indemnification  provisions described
above  and  elsewhere  herein:  (1) the  Amended  and  Restated  Certificate  of
Incorporation,  filed  as  Exhibit  3.1B  to  Registrant's  Amendment  No.  2 to
Registration  Statement  on Form S-1  filed  with the  Securities  and  Exchange
Commission on July 6, 1999;  (2) the Bylaws of the  Registrant  filed as Exhibit
3.1 to Registrant's Quarterly Report on Form 10-Q for the quarter ended June 30,
2002  and  (3)  the  form  of  Indemnification  Agreement  entered  into  by the
Registrant  with each of its directors and executive  officers  filed as Exhibit
10.1  to  Registrant's  Registration  Statement  on  Form  S-1  filed  with  the
Securities  and  Exchange  Commission  on  May 4,  1999,  each  incorporated  by
reference into this Registration Statement.



                                      II-1


ITEM 16.  EXHIBITS


             EXHIBIT NO.       DESCRIPTION OF DOCUMENT
             ----------------- -------------------------------------------------
             1.1               Engagement Letter Between BioMarin Pharmaceutical
                               Inc.  and    Reedland   Capital   Partners,   an
                               Institutional  Division of  Financial West Group,
                               dated August 15, 2001.
             1.2               Common Stock  Purchase Agreement between BioMarin
                               Pharmaceutical  Inc. and  Acqua Wellington  North
                               American Equities  Fund,  Ltd.,  dated August 15,
                               2001.
             1.3*              First  Amendment  to  Engagement  Letter  between
                               BioMarin Pharmaceutical Inc. and Reedland Capital
                               Partners, an Institutional Division of  Financial
                               West Group, dated October 3, 2002.
             1.4*              Amendment No.1 to Common Stock Purchase Agreement
                               between BioMarin  Pharmaceutical Inc.  and  Acqua
                               Wellington  North  American  Equities  Fund, Ltd.
                               dated September 24, 2002.
             5.1               Opinion  of Paul,  Hastings,  Janofsky  & Walker,
                               LLP.
             10.1              Letter  Agreement between BioMarin Pharmaceutical
                               Inc. and Acqua Wellington North American Equities
                               Fund,  Ltd.,  dated  August  15,  2001  regarding
                               Termination   of  the   Common   Stock   Purchase
                               Agreement dated January 26, 2001.
             23.1*             Consent of Paul, Hastings, Janofsky & Walker LLP.
             23.2**            Consent of Arthur Andersen LLP.
             24.1*             Power of Attorney.
                         * Filed herewith.  All other Exhibits filed previously.

                         **Omitted Pursuant to Rule 437a of the Securities Act

ITEM 17.  UNDERTAKINGS

Insofar as indemnification  for liabilities  arising under the Securities Act of
1933, may be permitted to directors,  officers,  and controlling  persons of the
Registrant  pursuant to the  provisions  described in Item 15 or otherwise,  the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission,  such  indemnification  is against public policy as expressed in the
Act,  and  is,  therefore,   unenforceable.  In  the  event  that  a  claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses incurred or paid by a director,  officer,  or controlling
person of the  Registrant  in the  successful  defense  of any action  suit,  or
proceeding) is asserted by such  director,  officer,  or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

The undersigned Registrant hereby undertakes:

               (1) To file, during any period in which offers or sales are being
               made pursuant to this registration statement:  (i) to include any
               prospectus  required by Section 10(a)(3) of the Securities Act of
               1933;  (ii) to  reflect  in the  prospectus  any  facts or events
               arising after the effective  date of the  registration  statement
               (or the most  recent  post-effective  amendment  thereof)  which,
               individually or in the aggregate,  represent a fundamental change
               in the  information  set  forth  in the  registration  statement.
               Notwithstanding the foregoing, any increase or decrease in volume
               of  securities  offered (if the total dollar value of  securities
               offered  would not  exceed  that  which was  registered)  and any
               deviation  from  the low or  high  end of the  estimated  maximum
               offering  range may be reflected in the form of prospectus  filed
               with the Commission pursuant to Rule 424(b) if, in the aggregate,
               the  changes  in  volume  and price  represent  no more than a 20
               percent change in the maximum aggregate  offering price set forth
               in the  "Calculation of Registration  Fee" table in the effective
               registration statement; (iii) to include any material information
               with respect to the distribution not previously  disclosed in the
               registration statement or any material change to such information
               in the registration statement;


                                      II-2


               (2) That, for the purpose of determining  any liability under the
               Securities Act of 1933, each such post-effective  amendment shall
               be  deemed to be a new  registration  statement  relating  to the
               securities  offered therein,  and the offering of such securities
               at that time shall be deemed to be the initial bona fide offering
               thereof; and

               (3) To  remove  from  registration  by means of a  post-effective
               amendment any of the  securities  being  registered  which remain
               unsold at the termination of the offering.

The undersigned  Registrant  hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the  Registrant's
annual  report  pursuant  to section  13(a) or section  15(d) of the  Securities
Exchange  Act of 1934 that is  incorporated  by  reference  in the  registration
statement  shall be deemed to be a new  registration  statement  relating to the
securities  offered  therein,  and the offering of such  securities at that time
shall be deemed to be the initial bona fide offering thereof.

The undersigned  Registrant  undertakes that: (1) for purpose of determining any
liability  under the Securities Act of 1933,  the  information  omitted from the
form of prospectus filed as part of the registration  statement in reliance upon
Rule  430A and  contained  in the  form of  prospectus  filed by the  Registrant
pursuant to Rule 424(b) (1) or (4) or 497(h) under the  Securities  Act shall be
deemed to be part of the  registration  statement as of the time it was declared
effective;  and (2) for the  purpose  of  determining  any  liability  under the
Securities Act of 1933,  each  post-effective  amendment that contains a form of
prospectus  shall be deemed to be a new registration  statement  relating to the
securities  offered  therein,  and the offering of such  securities at that time
shall be deemed to be the initial bona fide offering thereof.

                                      II-3




                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  Act of 1933,  the  Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing on Form S-3 and has duly  caused  this Post  Effective
Amendment No.3 to Registration  Statement on form S-3 to be signed on its behalf
by the  undersigned,  thereunto duly authorized in the City of Novato,  State of
California, this 2nd day of October 2002.

                               BIOMARIN PHARMACEUTICAL INC.



                               By:  /s/ Fredric D. Price
                                  -----------------------------------
                                  Fredric D. Price
                                  Chairman, Chief Executive Officer and Director
                                  (Principal Executive Officer)

                                POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE  PRESENTS,  that each person whose  signature  appears
below  constitutes  and  appoints  Fredric  D.  Price and Louis  Drapeau as such
persons'  true and  lawful  attorneys-in-fact  and  agents,  with full  power of
substitution  and  resubstitution,  for such person and in such  person's  name,
place  and  stead,  in any and all  capacities,  to sign any and all  amendments
(including  post-effective  amendments) to this Registration  Statement,  and to
file the same,  with all exhibits  thereto,  and other  documents in  connection
therewith,  with the Securities and Exchange Commission and any other regulatory
authority,  granting  unto said  attorneys-in-fact  and  agents,  full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in connection therewith, as fully to all intents and purposes as such
person might or could do in person,  hereby  ratifying and  confirming  all that
said  attorneys-in-fact  and agents, or such persons' substitute or substitutes,
may lawfully do or cause to be done by virtue hereof.

Pursuant to the  requirements of the Securities Act of 1933, this Post effective
Amendment  No. 3 to  Registration  Statement  on Form S-3 has been signed by the
following persons in the capacities and on the dates indicated:



                                                                                                    

                 Signature                                            Title                                     Date
                 ---------                                            -----                                     ----
/s/ Fredric D. Price                         Chairman, Chief Executive Officer and Director               October 2, 2002
---------------------------                  (Principal Executive Officer)
Fredric D. Price

/s/ Louis Drapeau                            Vice President, Finance, Secretary and Chief Financial       October 2, 2002
---------------------------                  Officer (Principal Financial and Accounting Officer)
Louis Drapeau

/s/ Franz L. Cristiani                       Director                                                     October 2, 2002
---------------------------
Franz L. Cristiani

/s/ Phyllis I. Gardner                       Director                                                     October 2, 2002
---------------------------
Phyllis I. Gardner, M.D.

/s/ Elaine Heron                             Director                                                     October 2, 2002
---------------------------
Elaine Heron, PhD

/s/ Erich Sager                              Director                                                     October 2, 2002
---------------------------
Erich Sager

/s/ Vijay B. Samant                          Director                                                     October 2, 2002
---------------------------
Vijay B. Samant

/s/ Gwynn R. Williams                        Director                                                     October 2, 2002
---------------------------
Gwynn R. Williams



                                      II-4








                                INDEX TO EXHIBITS


             EXHIBIT NO.       DESCRIPTION OF DOCUMENT
             ----------------  -----------------------------------------------
             1.1               Engagement Letter Between BioMarin Pharmaceutical
                               Inc.    and   Reedland    Capital   Partners  an
                               Institutional Division  of Financial  West Group,
                               dated August 15, 2001.
             1.2               Common Stock Purchase Agreement between  BioMarin
                               Pharmaceutical  Inc.  and Acqua  Wellington North
                               American  Equities  Fund, Ltd., dated  August 15,
                               2001.
             1.3*              First  Amendment  to  Engagement  Letter  between
                               BioMarin Pharmaceutical Inc. and Reedland Capital
                               Partners, an Institutional Division of  Financial
                               West Group, dated October 3, 2002.
             1.4*              Amendment No.1 to Common Stock Purchase Agreement
                               between BioMarin  Pharmaceutical Inc.  and  Acqua
                               Wellington  North  American  Equities  Fund, Ltd,
                               dated September 24, 2002.
             5.1               Opinion  of  Paul, Hastings,  Janofsky &  Walker,
                               LLP.
             10.1              Letter Agreement between BioMarin  Pharmaceutical
                               Inc. and Acqua Wellington North American Equities
                               Fund,  Ltd.,  dated  August  15,  2001  regarding
                               Termination   of   the   Common  Stock   Purchase
                               Agreement dated January 26, 2001.
             23.1*             Consent of Paul, Hastings, Janofsky & Walker LLP.
             23.2**            Consent of Arthur Andersen LLP.
             24.1*             Power of Attorney.
                         * Filed herewith. All other Exhibits filed previously.

                         **Omitted Pursuant to Rule 437a of the Securities Act.