As filed with the Securities and Exchange Commission on August 16, 2001

                                                      Registration No. 333-48800

================================================================================

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

                        Post Effective Amendment No. 2 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)
        -----------------------------------------------------------------

                               Raymond W. Anderson
                             Chief Financial 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
                       555 South Flower Street, 23rd Floor
                       Los Angeles, California 90071-2371
                                 (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,
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.


================================================================================

                                Explanatory Note

As last amended on January 29, 2001, this  registration  statement  provided for
the issuance and sale of 4,000,000 shares of our common stock.  Pursuant to this
post-effective amendment to the registration statement on Form S-3 (SEC File No.
333-48800),  we hereby amend the registration statement to  deregister a total
of 1,500,000  shares of the 4,000,000  shares.  The  1,500,000  shares of common
stock  deregistered  hereby  remain  unsold as of the date of the filing of this
post-effective amendment.














































































                                      2



                                   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 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 5 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 August 16, 2001



















                                TABLE OF CONTENTS

                                                                            Page

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

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

FORWARD LOOKING STATEMENTS.....................................................4

RISK FACTORS...................................................................5

USE OF PROCEEDS...............................................................16

PLAN OF DISTRIBUTION..........................................................17

LEGAL MATTERS.................................................................19

EXPERTS.......................................................................19











                       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., New York, NY and Chicago, IL. 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, 2000;

2.       Our Definitive Proxy Statement dated April 3, 2001 filed in connection
         with our 2001 Annual Meeting of Stockholders;

3.       Our Quarterly Reports on Form 10-Q for quarters ended March 31, 2001
         and June 2001;

4.       Our current reports on Form 8-K as filed on May 18, 2001 and
         June 25, 2001; and

5.       The description of our common stock set forth in our Amendment No. 4
         Registration Statement on Form S-1, filed with the SEC on July 22, 1999

         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: Investor Relations
                     371 Bel Marin Keys Boulevard, Suite 210
                                Novato, CA 94949
                                 (415) 884-6700




                                     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 are a developer of carbohydrate enzyme therapies for debilitating,
life-threatening, chronic genetic diseases and other diseases and conditions. In
September 1998, we established a joint venture with Genzyme for the worldwide
development and commercialization of our lead drug product, Aldurazyme(TM), for
the treatment of mucopolysaccharidosis-I or MPS I, a serious genetic disease.
Aldurazyme has received fast track designation for the treatment of the more
severe forms of MPS I. The U.S. Food and Drug Administration (FDA) has granted
Aldurazyme for the treatment of MPS I an orphan drug designation giving us
exclusive rights to market Aldurazyme to treat MPS I for seven years from the
date of FDA approval if Aldurazyme is the first product to be approved by the
FDA for the treatment of MPS I. In addition, the European Commission has
designated Aldurazyme for the treatment of MPS I as an orphan medical product in
the European Community, giving us similar market exclusivity in Europe for 10
years.

         MPS I is a life-threatening genetic disease caused by the lack of a
sufficient quantity of the enzyme (alpha)-L-iduronidase, which affects about
3,400 patients in developed countries, including approximately 1,000 in the
United States and Canada. Patients with MPS I have multiple debilitating
symptoms resulting from the buildup of carbohydrate residues in all tissues in
the body. These symptoms include delayed physical and mental growth, enlarged
livers and spleens, skeletal and joint deformities, airway obstruction, heart
disease, reduced endurance and pulmonary function, and impaired hearing and
vision. Most children with MPS I will die from complications associated with the
disease before adulthood.

        Aldurazyme is a specific form of recombinant human (alpha)-L-iduronidase
that replaces a genetic deficiency of (alpha)-L-iduronidase in MPS I patients.
In April 1999, we completed a twelve-month patient evaluation for the initial
clinical trial of Aldurazyme. This trial treated and evaluated ten patients with
MPS I at six medical centers in the United States. The results of the trial were
presented at the American Society for Human Genetics in October 1999. Based on
data collected during the initial twelve-month evaluation period, Aldurazyme met
the primary endpoints set forth in the investigational new drug application. In
addition, Aldurazyme demonstrated efficacy according to various secondary
endpoints in each of the patients. We continue to collect data from the ongoing
treatment of these original patients. We recently released the data from the
two-year follow-up evaluation, which continued to suggest the efficacy of
Aldurazyme. In collaboration with Genzyme, we initiated a six-month Phase III
clinical trial of Aldurazyme in December 2000 with the intention to file a
Biologics License Application (BLA) with the FDA, pending the successful outcome
of the Phase III trial. By August 3, 2001, all 45 MPS I patients enrolled in
this trial had received at least 23 of their planned 26 weekly infusions and 26
of the 45 patients have received all 26 weekly infusions.

         In August 2000, our Galli Drive manufacturing facility and a smaller
clinical manufacturing laboratory in our Bel Marin Keys Boulevard facility were
both subjected to an extensive inspection by the State of California Food and
Drug Branch and were granted licenses to produce clinical product.

         We submitted an Investigational New Drug Application for recombinant
human N-acetylgalactosamine-4-sulfatase also known as arylsulfatase B or rhASB
and received FDA acceptance to begin a Phase I/II clinical trial in enzyme
replacement therapy for MPS VI, which was initiated on October 11, 2000. By the
end of July 2001, all six patients in this trial had received all of their
planned twenty-four weekly infusions. In accordance with the original protocol
of the trial, we expect to release the results of this trial in September 2001.
MPS VI, also known as Maroteaux-Lamy syndrome, is similar in its clinical
symptoms to MPS I. However, MPS VI does not appear to have the central nervous
system involvement and mental retardation characteristics of the most severe
form of MPS I. We are manufacturing clinical bulk rhASB in our Bel Marin Keys
Boulevard clinical manufacturing facility. RhASB has received fast track
designation and has received orphan drug designation for the treatment of MPS VI
by the FDA. In addition, the European Commission has designated rhASB for the
treatment of MPS VI as an orphan medical product in the European Community.










                                        1


         We have successfully conducted preclinical studies of our burn enzyme,
Vibriolysin Topical, for use in burn debridement and grafting in pigs and mice.
In June 2001, we filed a Clinical Trial Exemption application with the Medicines
Control Agency in the United Kingdom for permission to begin a clinical trial
for Vibriolysin Topical. We expect to begin a clinical trial in the second half
of 2001.

         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.



































































                                       2



                                  THE OFFERING
                                                              
Common stock offered in this prospectus........................   2,500,000 shares
Common stock outstanding after the offering....................   44,456,093 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 recombinant human arylsulfatase B
                                                                  (rhASB) and Vibriolysin Topical; 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 August 8, 2001 and assumes that
we have issued all of the shares of our common stock offered in this prospectus,
but excludes:

o    6,804,870 shares subject to options  outstanding as of August 8, 2001, at a
     weighted average exercise price of $10.78 per share;

o    752,427 additional  shares  issuable upon exercise of  outstanding
     warrants, at a weighted average exercise price of $12.99 per share.

o    1,402,407 additional shares that we could issue under our stock option
     plans; and

o    504,496 additional  shares that we could issue under our  employee  stock
     purchase plan.





















































                                       3

                           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.































































                                       4

                                  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 drug products. As of March 31, 2001, we had an accumulated deficit of
approximately $90.2 million. We expect to continue to operate at a net loss at
least through 2002. Our future profitability depends on our receiving regulatory
approval of our drug 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.

        Because of the relative small size and scale of our wholly-owned
subsidiary, Glyko, Inc., profits from its products and services will be
insufficient to offset the expenses associated with our pharmaceutical business.
As a result, we expect that operating losses will continue and increase for the
foreseeable future.

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 cannot be certain that any financing will be available when
needed. If we fail to raise additional financing as we need it, 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. Activities which will require additional
expenditures include:

o    Research and development programs

o    Preclinical studies and clinical trials

o    Process development, including quality systems for product manufacture

o    Regulatory processes in the United States and international jurisdictions

o    Commercial scale manufacturing capabilities

o    Expansion of sales and marketing activities

The amount of capital we will need depends on many factors, including:

o    The progress, timing and scope of our research and development programs

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

o    The time and cost necessary to obtain regulatory approvals

















                                       5


o    The time and cost  necessary  to develop  commercial  processes,  including
     quality systems

o    The time and cost  necessary  to build  our  manufacturing  facilities  and
     obtain the necessary regulatory approvals for those facilities

o    The time  and  cost  necessary  to  respond  to  technological  and  market
     developments

o    Any  changes  made  or  new  developments  in our  existing  collaborative,
     licensing and other commercial relationships

o    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

o    Additional contracts for product manufacturing

        We believe that the cash, cash equivalents and short-term investment
securities balances at June 30, 2001, together with the proceeds from our
recent private placement of our common stock, will be sufficient to meet our
operating and capital requirements at least through the end of 2002.
This estimate is 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.

        We must obtain regulatory approval before marketing or selling our drug
products in the U.S. and in foreign jurisdictions. In the United States, 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 candidates 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, the value of our Company and our operating results will be
adversely affected.

To obtain regulatory approval to market our products, preclinical studies and
costly and lengthy clinical trials may 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 candidate. 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 products. Additional factors that can cause delay or
termination of our clinical trials include:

o    Slow patient enrollment







                                       6


o    Longer treatment time required to demonstrate efficacy

o    Lack of sufficient supplies of the drug candidate

o    Adverse medical events or side effects in treated patients

o    Lack of effectiveness of the drug candidate being tested

o    Regulatory requests for additional clinical trials

        Typically, if a drug product is intended to treat a chronic disease,
safety and efficacy data must be gathered over an extended period of time, which
can range from six months to three years or more. In addition, clinical trials
on humans are typically conducted in three phases. The FDA generally requires
two pivotal clinical trials that demonstrate substantial evidence of safety and
efficacy and appropriate dosing in a broad patient population at multiple sites
to support an application for regulatory approval. If a drug is intended for the
treatment of a serious or life-threatening condition and the drug demonstrates
the potential to address unmet medical needs for this condition, fewer clinical
trials may be sufficient to prove safety and efficacy under the FDA's
Modernization Act of 1997.

        In April 1999, we completed a twelve-month patient evaluation for the
initial clinical trial of our lead drug product, Aldurazyme, for the treatment
of MPS I. The results were presented at the American Society for Human Genetics
in October 1999. We continue to collect data from the ongoing treatment of these
original patients. The initial clinical trial treated ten patients with MPS I at
six medical centers in the United States. Two of the original ten patients
enrolled in the first clinical trial of Aldurazyme died in 2000. Based on
medical data collected from clinical investigative sites, neither case directly
implicated treatment with Aldurazyme as the cause of death. The data suggest
that one patient died due to a combination of systemic viral illness, residual
MPS I coronary disease, and external factors. This patient had received 103
weeks of Aldurazyme administration. For the other patient, the data suggest that
the patient died due to complications following posterior spinal fusion for
scoliosis. This patient had received 127 weeks of Aldurazyme administration.

The fast track designation for our product candidates may not actually lead to
a faster review process.

        Although Aldurazyme and rhASB have obtained fast track designations, we
cannot guarantee a faster review process or faster approval compared to the
normal FDA procedures.

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 facility and process. 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. We cannot guarantee that these facilities
will pass federal or international regulatory inspection. We cannot guarantee
that we, or any potential third-party manufacturer of our drug products, will be
able to comply with cGMP regulations.

        We must pass Federal, state and European regulatory inspections, and we
must manufacture three process qualification batches (five process qualification
batches for Europe) 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 our products, our competitors
may sell products to treat the same conditions and our revenues may be reduced.

         As part of our business strategy, we intend to develop 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 obtains








                                       7

the first 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.

         We received orphan drug designation from the FDA for Aldurazyme for the
treatment of MPS I in September 1997. In February 1999, we received orphan drug
designation from the FDA for rhASB for the treatment of MPS VI. In February
2001, we received orphan drug designation from the European Community for both
products. Even though we have obtained orphan drug designation for these drugs
and even if we obtain orphan drug designation for other products we develop, we
cannot guarantee that we will be the first to obtain marketing approval for any
orphan indication or that exclusivity would effectively protect the product from
competition. Orphan drug designation neither shortens the development time or
regulatory review time of a drug so designated nor gives the drug any advantage
in the regulatory review or approval process.

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

         Our initial drug candidates target diseases with small patient
populations. As a result, our per patient prices must be high enough to recover
our development costs and achieve profitability. For example, two of our initial
drug products in genetic diseases, Aldurazyme and rhASB, target patients with
MPS I and MPS VI, respectively. 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. We cannot be certain that we will be able 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, there would 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 rhASB 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 rhASB
without reimbursement from third-party payers.

        Third-party payers, such as government or private health care insurers,
carefully review and increasingly challenge the price 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
cannot be certain that third-party payers will pay for the costs of our drugs
and the courses of treatment. Even if we are able to obtain reimbursement from
third-party payers, we cannot be certain that reimbursement rates will be enough
to allow us to profit from sales of our drugs or to justify our product
development expenses.

        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. We cannot predict what the
reimbursement rates will be. 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 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





                                      8

which would affect the profitability of drugs. Current government regulations
and possible future legislation regarding health care may affect our future
revenues from sales of our drugs and may adversely affect our business and
prospects.

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. Meaningful patent protection may not be available for some of the
enzymes we are developing, including Aldurazyme and rhASB. 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.

         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, including those for
Aldurazyme and rhASB, have been published and are believed to be in the public
domain. The composition and genetic sequences of other MPS enzymes which 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 composition-of-matter patents, we will depend on orphan drug
status to provide us a competitive advantage.

         In addition, our owned and licensed patents and patent applications do
not ensure the protection of our intellectual property for a number of other
reasons:

o    We do not know  whether  our  patent  applications  will  result  in actual
     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.  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. In litigation, a competitor could claim that our issued patents
     are not valid for a number of reasons.  If the court agrees,  we would lose
     that patent.

o    Even if we receive a patent, it 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. There are many patents in our field of technology, and we cannot
guarantee 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:

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.














                                       9

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 will provide useful
protection. 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.

        We may also support and collaborate in research conducted by government
organizations or by universities. We cannot guarantee that we will be able to
acquire any exclusive rights to technology or products derived from these
collaborations. 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 recently issued two patents that
related to (alpha)-L-iduronidase. If Aldurazyme infringes on these patents and
we are not able to successfully challenge them, we may be prevented from
producing Aldurazyme unless and until we obtain a license.

         The United States Patent and Trademark Office recently issued two
patents that include claims related to (alpha)-L-iduronidase. Our lead drug
product, Aldurazyme, may infringe on these patents. We believe that these
patents are invalid on a number of grounds. Two patents making the same claims
were filed in Europe and have been rejected and cannot be refiled. Our
challenges to the U.S. patents may be unsuccessful, but the rejection of the
European applications supports our strategy to challenge the validity of the
U.S. patents. 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 our product 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 unless we can obtain a sub-license 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 Ceredase(R) and Cerezyme(R) enzymes for Gaucher
disease, a rare genetic disease, to the marketing of our initial drug product,
Aldurazyme. Because it is our initial product, our operations are substantially
dependent upon the development of 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.

        We cannot guarantee that Genzyme will devote the resources necessary to
successfully market Aldurazyme. In addition, either party 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. 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.

        Upon termination of the joint venture one party must buy out the other
party's interest in the joint venture. The party who buys out the other will
then also obtain, exclusively, all rights to Aldurazyme and any related
intellectual property and regulatory approvals.

        If the joint venture is terminated by Genzyme for a breach on our part,
Genzyme 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 our interest in the joint venture. We would then effectively be unable
to develop and commercialize Aldurazyme. If we terminated the joint venture for








                                       10

a breach by Genzyme, we would be obligated to buy out Genzyme's interest in the
joint venture and, we would then be granted all of these rights to Aldurazyme
exclusively. While we could then continue to develop Aldurazyme, that
development would be slowed because we would have to divert substantial capital
to buy out Genzyme's interest in the joint venture. We would then either have to
search for a new partner to commercialize the product and to obtain foreign
regulatory approvals or have to develop these capabilities ourselves.

        If the joint venture is terminated by us without cause, Genzyme would
have the option, exercisable for one year, to immediately buy out our interest
in the joint venture and obtain all rights to Aldurazyme exclusively. If the
agreement is terminated by Genzyme without cause, we would have the option,
exercisable for one year, to immediately buy out Genzyme's interest in the joint
venture and obtain these exclusive rights. In 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 us because Genzyme fails to make
the $12.1 million payment to us upon FDA approval of the BLA for Aldurazyme, we
would be obligated to buy Genzyme's interest in the joint venture and would
obtain all rights to Aldurazyme exclusively. 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.

        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.

        With the exception of Aldurazyme, we have no experience manufacturing
drug products in volumes that will be necessary to support commercial sales. Our
manufacturing processes may not meet initial expectations as to schedule,
reproducibility, yields, purity, costs, quality, and other measurements of
performance. Improvements in manufacturing processes typically are very
difficult to achieve and are often very expensive. We cannot know with certainty
how long it might take to make improvements if it became necessary to do so. If
we contract for manufacturing services with an unproven process, our contractor
is subject to the same uncertainties, high standards and regulatory controls.

If we are unable to establish and maintain commercial scale manufacturing within
our planned time and cost parameters, sales of our products and our financial
performance will be adversely affected.

        Although we have successfully manufactured Aldurazyme at commercial
scale within our cost parameters, we cannot guarantee that we will be able to
manufacture rhASB, Vibriolysin or any future product candidates successfully in
a scale large enough to support their respective commercial markets.

        We may encounter problems with any of the following if we attempt to
increase the scale or size of manufacturing:

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









                                       11

o    Production yields

o    Purity

o    Quality control and assurance systems

o    Shortages of qualified personnel

o    Compliance with regulatory requirements

        We have constructed and built-out a total of 41,200 square feet at our
Novato facilities for manufacturing capability for Aldurazyme and rhASB. We
expect to expand the Galli Drive facility in stages over time, which creates
additional operational complexity and challenges. We expect that the
manufacturing process of all of our new products, including rhASB, will require
lengthy significant time and resources before we can begin to manufacture them
(or have them manufactured by third parties) in commercial quantity. Even if we
can establish the necessary capacity, we cannot be certain that manufacturing
costs will be commercially reasonable, especially if third-party reimbursement
is substantially lower than expected.

        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 make-up,

o    Improving the 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 which
is used to produce a protein that it would not have otherwise produced. The
development of a stable, high production cell line for any given enzyme is
risky, 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 increase our 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 increase our marketing capabilities either by developing
our sales and marketing organization or by entering into agreements with others,
we may be unable to successfully sell our products. If we are unable to
effectively sell our drug products, our ability to generate revenues will be
diminished.

        To increase our distribution and marketing for both our drug candidates
and our Glyko, Inc. products, we will have to increase our current sales force
and/or enter into third-party marketing and distribution agreements. We cannot
guarantee that we will be able to hire in a timely manner, the qualified sales
and marketing personnel we need, if at all. Nor can we guarantee that we will be
able to enter into any marketing or distribution agreements on acceptable terms,
if at all. If we cannot increase our marketing capabilities as we intend, either
by increasing our sales force or entering into agreements with third parties,
sales of our products may be adversely affected.

        Under our joint venture with Genzyme, Genzyme is responsible for
marketing and distributing Aldurazyme. We cannot guarantee that we will be able
to establish sales and distribution capabilities or that the joint venture, any
future collaborators or we will successfully sell any of our drug candidates.

If we fail to compete successfully, our revenues and operating results will be
adversely affected.

        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. If our competitors successfully commercialize a product, which treats a









                                       12

given rare genetic disease before we do, we will effectively be precluded from
developing a product to treat that disease because the patient populations of
the rare genetic diseases are so small. If our competitor gets orphan drug
exclusivity, we could be precluded from marketing our version for seven years.
However, different drugs can be approved for the same condition. These companies
also compete with us to attract qualified personnel and organizations for
acquisitions, joint ventures or other collaborations. They also compete with us
to attract academic research institutions as partners and to license these
institutions' proprietary technology. 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. 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. We also directly compete with a
number of these organizations to recruit personnel, especially scientists and
technicians.

        We believe that established technologies provided by other companies,
such as laboratory and testing services firms, compete with Glyko, Inc.'s
products and services. For example, Glyko's FACE(R) Imaging System competes with
alternative carbohydrate analytical technologies, including capillary
electrophoresis, high-pressure liquid chromatography, mass spectrometry and
nuclear magnetic resonance spectrometry. These competitive technologies have
established customer bases and are more widely used and accepted by scientific
and technical personnel because they can be used for non-carbohydrate
applications. Companies competing with Glyko may have greater financial,
manufacturing and marketing resources and experience.

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 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. We cannot guarantee that our staff, financial resources, systems,
procedures or controls will be adequate to support our operations or that our
management will be able 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.

        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 Christopher M.
Starr, Ph.D., our Vice President for Research and Development, could be
detrimental to us if we cannot recruit suitable replacements in a timely manner.
While Mr. Price and Dr. Starr are parties to employment agreements with us, we
cannot 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. We cannot be certain that we will
continue to attract and retain qualified personnel necessary for the development
of our business.

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. We have obtained insurance against product liability



                                       13

lawsuits for the clinical trials for rhASB. We may be subject to claims in
connection with our current clinical trials for Aldurazyme and rhASB for which
the joint venture's or our insurance coverages are not adequate. We cannot be
certain that if Aldurazyme receives FDA approval, the product liability
insurance the joint venture will need to obtain in connection with the
commercial sales of Aldurazyme will be available in meaningful amounts or at a
reasonable cost. In addition, we cannot be certain that we can successfully
defend any product liability lawsuit brought against us. If we are the subject
of a successful product liability claim which exceeds the limits of any
insurance coverage we may obtain, we may incur substantial liabilities which
would adversely affect our earnings and financial condition.

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 and our other lead drug products through the
     regulatory process, especially Aldurazyme regulatory actions in the United
     States

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

o    Government regulatory action affecting our drug candidates or our
     competitors' drug candidates in both the United States and foreign
     countries

o    Developments or disputes concerning patent or proprietary rights

o    General market conditions for emerging growth and biopharmaceutical
     companies

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 may cause the
     market price of our common stock to fluctuate

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

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.






















                                       14

Substantial resales of our common stock which may be issued pursuant to this
prospectus could adversely affect the price of our common stock.

        The maximum shares which may be issued pursuant to this prospectus
represents a significant portion of our outstanding common stock. If the persons
acquiring these shares sell all or a substantial portion of these shares of
common stock on the public market in a short period of time, the common stock
available for sale may exceed the demand and the stock price may be adversely
affected. In addition, the mere perception that such sales could occur may
depress the price of our common stock.

If our officers, directors and largest stockholder elect to act together, they
may be able to control our management and operations, acting in their best
interests and not necessarily those of other stockholders.

        Our directors and officers control approximately 44.8% of the
outstanding shares of our common stock. Glyko Biomedical Ltd. owns 27.0% of the
outstanding shares of our capital stock. The president and chief executive
officer of Glyko Biomedical and a significant shareholder of Glyko Biomedical
serve as two of our directors. As a result, due to their concentration of stock
ownership, directors and officers, if they act together, may be able to control
our management and operations, and may be able to prevail on all matters
requiring a stockholder vote including:

o    The election of all directors;

o    The  amendment of charter  documents  or the approval of a merger,  sale of
     assets or other major corporate transactions; and

o    The defeat of any  non-negotiated  takeover  attempt  that might  otherwise
     benefit the public stockholders.

Anti-takeover provisions in our charter documents 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 1,000,000 shares of preferred
stock and to determine the terms of those shares of stock without any further
action by the stockholders. The rights of holders of our common stock are
subject to the rights of the holders of any preferred stock that 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.































                                       15

                                 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 rhASB
     and Vibriolysin Topical;

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, rhASB and Vibriolysin Topical 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."




































                                       16

                              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 until October 15, 2002, up to an aggregate of
$27,700,000 of our common stock. The total amount of securities available
under the purchase agreement, as amended, may not exceed 10% of the aggregate
market value of our outstanding common stock that was held by our non-affiliates
as of August 15, 2001. In connection with entering into the new agreement, we
have terminated the common stock purchase agreement that we had entered with
Acqua Wellington North American Equities Fund, Ltd. on January 26, 2001.

        On February 1, 2001, we issued and sold 101,153  shares of our common
stock to Acqua Wellington at a negotiated price of $9.85 per share. These
101,053 shares were issued pursuant to this prospectus and are included in the
total 2,500,000 related to this agreement

        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 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 this 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
1% and 0.67% 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.

        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.

                                       17


        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.




















                                       18

                                  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

         The financial statements included in our Annual report on form 10-K for
the year ended December 31, 2000, 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(s) with
respect thereto, and are included herein in reliance upon the authority of said
firm as experts in giving said reports.








































































                                       19


                                     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...............................        $45,000
           Accountants' fees and expenses........................         $7,500
           Miscellaneous.........................................         $3,000
                                                                       ---------
           Total.................................................        $69,957


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 March
31, 2001 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


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.

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.2 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 15th day of August, 2001.

                       BIOMARIN PHARMACEUTICAL INC.



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



         Pursuant to the requirements of the Securities Act of 1933, this Post
effective Amendment No. 2 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               August 15, 2001
-------------------------------------        (Principal Executive Officer)
Fredric D. Price

/s/ Raymond W. Anderson                      Chief Financial Officer, Chief Operating Officer,            August 15, 2001
--------------------------------             Secretary, and Vice President Finance and
Raymond W. Anderson                          Administration (Principal Financial and Accounting
                                             Officer)


/s/              *                           Director                                                     August 15, 2001
----------------------------------
Grant W. Denison, Jr.

/s/             *                            Director                                                     August 15, 2001
---------------------------------
Ansbert S. Gadicke, M.D.

/s/             *                            Director                                                     August 15, 2001
----------------------------------
Erich Sager

/s/              *                           Director                                                     August 15, 2001
-----------------------------------
Gwynn R. Williams

*By:   /s/ Raymond W. Anderson
       ---------------------------
       Raymond W. Anderson
       as Attorney-In-Fact


























                                      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

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.