As filed with the Securities and Exchange Commission on February 14, 2002
                      Registration Statement No. 333-72166
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                        POST-EFFECTIVE AMENDMENT NO. 1 TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                        COLLAGENEX PHARMACEUTICALS, INC.
         ---------------------------------------------------------------
             (Exact Name of Registrant as Specified in Its Charter)



         Delaware                                         52-1758016
- ---------------------------------             ----------------------------------
(State or Other Jurisdiction                           (I.R.S. Employer
of Incorporation or Organization)                    Identification Number)


                               41 University Drive
                           Newtown, Pennsylvania 18940
                                 (215) 579-7388
            ---------------------------------------------------------
          (Address, Including Zip Code, and Telephone Number, Including
             Area Code, of Registrant's Principal Executive Offices)

                            Brian M. Gallagher, Ph.D.
                      President and Chief Executive Officer
                        CollaGenex Pharmaceuticals, Inc.
                               41 University Drive
                           Newtown, Pennsylvania 18940
                                 (215) 579-7388
            ---------------------------------------------------------
            (Name, Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent for Service)
                        --------------------------------

                                    COPY TO:
                           Richard S. Mattessich, Esq.
                              Tod K. Reichert, Esq.
                                Hale and Dorr LLP
                              650 College Road East
                           Princeton, New Jersey 08540
                                 (609) 750-7600

     Approximate  date of  commencement  of proposed sale to public:  As soon as
     practicable after this Registration Statement becomes effective.

     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 COMPANY HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR DATES AS
MAY BE  NECESSARY  TO DELAY ITS  EFFECTIVE  DATE UNTIL THE COMPANY  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 OF  1933  OR  UNTIL  THE  REGISTRATION  STATEMENT  SHALL  BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.





The  information in this  prospectus is not complete and may be changed.  We may
not sell  these  securities  until the  registration  statement  filed  with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and it is not soliciting offers to buy these securities
in any state where the offer or sale is not permitted.

                 Subject to completion, dated February 14, 2002

PROSPECTUS

                        COLLAGENEX PHARMACEUTICALS, INC.

                         964,880 Shares of common stock

     This prospectus covers 964,880 shares of our common stock that we may offer
and sell from time to time to Kingsbridge  Capital Limited pursuant to the terms
of a Common Stock Purchase Agreement, or equity line arrangement that we entered
into with Kingsbridge on February 14, 2002.

     We will  receive all of the proceeds  from any shares sold to  Kingsbridge.
Kingsbridge  may then sell its  shares,  directly or through  broker-dealers  or
underwriters,  in the  over-the-counter  market,  in any securities  exchange or
market in which  our  common  stock may in the  future  be  traded,  in  private
negotiated  transactions or otherwise.  Kingsbridge  Capital Limited will be and
any broker-dealers or agents that are involved in selling the shares acquired by
Kingsbridge  Capital  Limited  under  the  equity  line  may  be  deemed  to  be
"underwriters"  within the meaning of the  Securities  Act of 1933 in connection
with their sales.

     Our common stock is traded on the Nasdaq  National  Market under the symbol
"CGPI." On February 13, 2002,  the last  reported sale price of our common stock
was $8.65 per share.

                          ---------------------------

     THE  SECURITIES  OFFERED  INVOLVE A HIGH DEGREE OF RISK. SEE "RISK FACTORS"
COMMENCING  ON  PAGE 4 FOR A  DISCUSSION  OF SOME  IMPORTANT  RISKS  YOU  SHOULD
CONSIDER BEFORE BUYING ANY SHARES OF OUR COMMON STOCK.

                          ---------------------------

     NEITHER THE  SECURITIES AND EXCHANGE  COMMISSION  NOR ANY STATE  SECURITIES
COMMISSION  HAS APPROVED OR  DISAPPROVED  THESE  SECURITIES,  OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

                The date of this prospectus is February 14, 2002.






                                TABLE OF CONTENTS

- -------------------------------------------------------------------------------
About this Prospectus.....................................................   2

CollaGenex Pharmaceuticals, Inc...........................................   3

The Equity Line...........................................................   3

Risk Factors..............................................................   6

 If Periostat is Not Adopted Routinely by Dental Professionals or if
  Managed Care Providers Do Not Continue to Reimburse Patients, Our Sales
  Growth Will Suffer......................................................   6

 We Rely on Periostat for Most of Our Revenue.............................   6

 We Anticipate Future Losses..............................................   6

 We Have a Limited Marketing and Sales History and May Not be Able to
  Successfully Market Our Product Candidates..............................   7

 Our Competitive Position in the Marketplace Depends on Enforcing and
  Successfully Defending Our Intellectual Property Rights.................   7

 If We Lose Our Sole Supplier of Doxycycline or Our Current Manufacturer
  of Periostat, Our Commercialization of Periostat Will be Interrupted
  or Less Profitable......................................................   8

 Our Products are Subject to Extensive Regulation by the FDA..............   8

 If Our Products Cause Injuries, We May Incur Significant
  Expense and Liability...................................................   9

 If We Need Additional Financing, and Financing is Unavailable, Our
  Ability to Develop and Commercialize Products and Our Operations Will
  be Adversely Affected...................................................   9

 Because Our Executive Officers, Directors and Affiliated Entities Own
  Approximately 32.6% of Our Capital Stock, They Could Control Our
  Actions in a Manner That Conflicts With Our Interests and the Interests
  of Our Other Stockholders...............................................  10

 We Expect to Sell Shares of our Common Stock in the Future, Including
  Shares Issued Under our Equity Line with Kingsbridge Capital Limited
  and these Sales Will Dilute the Interests of Security Holders and
  Depress the Price of our Common Stock...................................  10

 Our Stock Price is Highly Volatile, and Therefore the Value of Your
  Investment May Fluctuate Significantly................................... 10

Special Note Regarding Forward-Looking Information........................  11

Use of Proceeds...........................................................  12

Plan of Distribution......................................................  12

Legal Matters.............................................................  13

Experts...................................................................  13

Where You Can Find More Information......................................   13

Information Incorporated By Reference.....................................  13

Indemnification of Directors and Officers.................................  15
- -------------------------------------------------------------------------------



                              ABOUT THIS PROSPECTUS

     This prospectus is part of a registration  statement that we filed with the
Securities and Exchange  Commission  using a "shelf"  registration or continuous
offering process. Pursuant to the terms of a Common Stock Purchase Agreement, or
equity line, that we entered into with Kingsbridge  Capital Limited, we may from
time to time sell to  Kingsbridge  the shares of common  stock set forth in this
prospectus  in one or more  offerings up to an  aggregate  of 924,880  shares of
common stock. An additional  40,000 shares of common stock  underlying a warrant
we issued to Kingsbridge in connection  with the equity line are also registered
hereunder.

     This prospectus  provides you with a general  description of the securities
we may offer. Each time we sell securities we will provide you with a prospectus
supplement  containing  specific  information about the terms of each such sale.
The prospectus  supplement  also may add,  update or change  information in this
prospectus.  If  there  is any  inconsistency  between  the  information  in the
prospectus and the prospectus supplement,  you should rely on the information in
the  prospectus  supplement.  You  should  read  both  this  prospectus  and any
prospectus  supplement together with additional  information described under the
heading  "Where  You Can Find  More  Information"  beginning  on page 13 of this
prospectus.

     You should rely only on the information  contained in this prospectus or in
a prospectus  supplement or amendment.  We have not authorized anyone to provide
you with information  different from that contained or incorporated by reference
in this  prospectus.  We may offer to sell, and seek offers to buy shares of our
common stock only in  jurisdictions  where offers and sales are  permitted.  The
information contained in this prospectus or a prospectus supplement or amendment
or  incorporated  herein by  reference  is accurate  only as of the date of this
prospectus, regardless of the time of delivery of this prospectus or of any sale
of common stock.

                                      -2-




                        COLLAGENEX PHARMACEUTICALS, INC.

     CollaGenex  Pharmaceuticals,  Inc.  and  its  subsidiaries  is a  specialty
pharmaceutical  company focused on providing innovative medical therapies to the
dental market. In September 1998, the FDA approved our first product, Periostat,
a   prescription   pharmaceutical   capsule   to  treat   adult   periodontitis.
Periodontitis, the leading cause of tooth loss, is a disease of the gums that is
initiated by the  accumulation of bacterial plaque above and below the gum line.
The FDA approved Periostat as an adjunct to scaling and root planing, which is a
mechanical  procedure that dentists use to remove bacterial plaque. In addition,
Periostat has been approved by the United Kingdom  Medicines  Control Agency for
marketing in the United Kingdom. We are marketing Periostat to the United States
dental community through our professional dental  pharmaceutical  sales force of
approximately  120 sales  representatives  and  managers.  This sales force also
co-promotes  Vioxx(R),  a  prescription  non-steroidal,  anti-inflammatory  drug
developed by Merck & Co., Inc. and  Dentaplex(TM),  our  nutritional  supplement
formulated  to help  maintain  optimal  oral  health.  Pursuant to an  exclusive
Licensing  and  Marketing  Agreement  with Atrix  Laboratories,  Inc.,  we began
marketing Atrix's proprietary dental products, Atridox(R), Atrisorb(R)-Free Flow
and  Atrisorb(R)-D,  to the United  States dental market in October 2001. We are
actively pursuing other prescription and non-prescription  products to market to
the professional dental and medical communities and directly to the consumer.

     We are a Delaware corporation. We were incorporated and began operations in
1992  under  the name  CollaGenex,  Inc.  and  changed  our  name to  CollaGenex
Pharmaceuticals, Inc. in April 1996. Our principal executive offices are located
at 41 University Drive, Newtown, Pennsylvania 18940, and our telephone number is
(215) 579-7388.

     In this prospectus,  the terms  "CollaGenex," "we," "us" and "our" includes
CollaGenex Pharmaceuticals, Inc. and its subsidiaries.

     Periostat(R),  Metastat(R),  IMPACS(TM), Dermostat(R) and Dentaplex(TM) are
United States  trademarks of CollaGenex.  CollaGenex(TM)  and  Periostat(R)  are
trademarks of our wholly-owned subsidiary, CollaGenex International Limited.

     All other  trade  names,  trademarks  or service  marks  appearing  in this
prospectus are the property of their respective owners.

                                 THE EQUITY LINE

     On February 14, 2002, we entered into a Common Stock Purchase Agreement, or
equity line arrangement with Kingsbridge  Capital Limited,  pursuant to which we
may issue  and sell,  from  time to time,  shares of our  common  stock for cash
consideration up to an aggregate of $8.5 million. Commencing as of such date and
continuing for twelve (12) months thereafter,  we may, from time to time, at our
sole discretion, and subject to certain conditions that we must satisfy, sell or
"draw  down",  shares of our common  stock to  Kingsbridge  at a purchase  price
having a discount of up to 10% off of the daily volume  weighted  average of the
price of our common stock for each of the fifteen (15) days during any specified
purchase period as set forth in the following schedule:

- -------------------------------------------------------------------------------
                           VWAP*                         PERCENT OF VWAP

Equal to or greater than $15.00                                 94%
- -------------------------------------------------------------------------------
Equal to or greater than $7.00 but less than $15.00             92%
- -------------------------------------------------------------------------------
Greater than $3.34 but less than $7.00                          90%
- -------------------------------------------------------------------------------

                                      -3-



     * As set forth in the  equity  line  arrangement,  "VWAP"  means the volume
weighted  average  price of our common stock during a trading day as reported by
Bloomberg, L.P. using the AQR function.

     The  maximum  number of shares  that we may issue  under the equity line is
924,880,  all of which shares are  registered  hereunder.  An  additional 40,000
shares are registered  hereunder in connection  with a warrant that we issued to
Kingsbridge in connection with the equity line. Unless agreed to in writing,  we
may not sell shares at a per share price of less than $3.00.  In  addition,  and
with certain  exceptions,  in the event we do not draw down an aggregate minimum
of $1.5  million  under the equity line  within six (6) months of  February  14,
2002,  we shall pay to  Kingsbridge  a cash amount equal to 10% of the amount by
which $1.5 million  exceeds the actual  amount of our draw downs during such six
(6) month  period.  We will  exercise our right to draw down the equity line, to
the extent  available,  at such times as there is a need for additional  capital
and when sales of stock under the equity line provide the most  effective  means
of raising capital.

     A draw down can be made after five (5) trading  days have  elapsed from the
date of expiration of the preceding draw down pricing period in amounts  ranging
from a minimum  of  $250,000  to a maximum  of  $3,000,000,  based upon our then
current market capitalization and as set forth in the following schedule:

- --------------------------------------------------------------------------------
                MARKET CAPITALIZATION                  MAXIMUM DRAW DOWN AMOUNT
- -------------------------------------------------------------------------------
                At least $150 million                         $3 million
- -------------------------------------------------------------------------------
  At least $120 million but less than $150 million           $2.5 million
- -------------------------------------------------------------------------------
   At least $90 million but less than $120 million            $2 million
- -------------------------------------------------------------------------------
   At least $65 million but less than $90 million            $1.5 million
- -------------------------------------------------------------------------------
   At least $45 million but less than $65 million             $1 million
- -------------------------------------------------------------------------------

     We may not deliver a draw down notice if the result to Kingsbridge would be
that, following the purchase of such shares, Kingsbridge or its affiliates would
beneficially own more than 9.9% of our common stock then outstanding.

     The  issuance of our common  stock under the equity line  arrangement  will
have no effect on the rights or privileges  of existing  holders of common stock
except  that the  economic  and voting  interests  of each  stockholder  will be
diluted as a result of such  issuance.  Although  the number of shares of common
stock that  stockholders  presently  own will not  decrease,  such  shares  will
represent a smaller  percentage  of our total  shares  that will be  outstanding
after such events.  If we satisfy the conditions  that allow us to draw down the
entire $8.5 million  available  under the equity  line,  and we choose to do so,
then generally, as the market price of our common stock decreases, the number of
shares we will have to issue increases, to a maximum of 924,880 shares.

     The following are all of the material  additional  conditions  that must be
met before  Kingsbridge  Capital  Limited is  obligated to buy any shares of our
common stock upon  delivery of a draw down notice,  none of which are within the
control of Kingsbridge:

     o    Each  of  our  representations  and  warranties  in  the  equity  line
          agreement shall be true and correct in all material respects as of the
          date when made and as of the draw down exercise date as though made at
          that  time,  except  for   representations  and  warranties  that  are
          expressly made as of a particular date.

                                      -4-


     o    The  registration  statement  registering  the  offer  and sale of our
          common stock shall remain effective and shall thereafter be amended or
          supplemented, as required, to disclose the then current sale of shares
          of our common stock.

     o    Trading  in our  common  stock  shall not have been  suspended  by the
          Securities  and  Exchange  Commission,  the Nasdaq Stock Market or the
          National  Association of Securities  Dealers and trading in our common
          stock shall not have been  suspended  or limited,  and minimum  prices
          shall  not have  been  established  on  securities  whose  trades  are
          reported  by the  American  Stock  Exchange  or  the  New  York  Stock
          Exchange.

     o    We shall have no  knowledge  of any event more likely than not to have
          the effect of causing the registration statement registering the offer
          and sale of the shares to be suspended or otherwise ineffective (which
          event is more likely than not to occur  within  fifteen  (15)  trading
          days  following  the  trading  day on  which  a draw  down  notice  is
          delivered).

     o    No material adverse effect shall have occurred.

     There  is no  guarantee  that we will be able to meet  these  or any  other
conditions  under the equity line agreement or that we will be able to draw down
on any portion of the $8,500,000 equity line.

                                      -5-




                                  RISK FACTORS

     Investing  in our common stock  involves a high degree of risk.  You should
carefully consider the risks and uncertainties described below before purchasing
our common stock.  The risks and  uncertainties  described  below are all of the
material  risks of which we are aware.  If any of the following  risks  actually
occur, our business,  financial  condition or results of operations would likely
suffer.  In that case, the trading price of our common stock could fall, and you
may lose all or part of the money you paid to buy our common stock.

     IF PERIOSTAT IS NOT ADOPTED ROUTINELY BY DENTAL PROFESSIONALS OR IF MANAGED
CARE  PROVIDERS  DO NOT CONTINUE TO  REIMBURSE  PATIENTS,  OUR SALES GROWTH WILL
SUFFER.

     Our growth and success  depends in large part on our ability to continue to
demonstrate the safety and  effectiveness  of Periostat for the treatment of gum
disease  to  dental  practitioners.  Periostat  is the first  long-term  medical
therapy for any dental  disease and dentists are not  accustomed to  prescribing
drugs for a minimum 90-day  duration.  Periostat  works by  suppressing  certain
enzymes involved in the periodontal disease process,  which is a new concept for
many  dentists who believe  that  removing  bacterial  plaque is the only way to
treat this  disease.  Accordingly,  our sales  efforts  are  largely  focused on
educating  dental  professionals  about an  entirely  new  approach  to treating
periodontitis.  Although over 34,000  dentists in the United States have written
at least one prescription  for Periostat,  a number of dentists have not adopted
Periostat routinely into their treatment of adult periodontitis.  Other dentists
have  prescribed  Periostat  for  only a  subset  of  their  eligible  patients,
typically their most advanced or refractory  cases. If we are unable to initiate
and/or expand usage of Periostat by dentists, our sales growth will suffer.

     Approximately  65% of the large managed care providers in the United States
(defined as those that cover 100,000 or more lives) reimburse their patients for
Periostat,  typically  requiring  a modest  co-payment.  Our goal is to  achieve
reimbursement from approximately 75% of the large managed care providers,  since
the  remainder  have  policies  that do not  reimburse for drugs to treat dental
conditions. Patients who are not reimbursed by managed care providers may choose
not to accept Periostat as a treatment.

     WE RELY ON PERIOSTAT FOR MOST OF OUR REVENUE.

     During 1999, Periostat accounted for 95% of our total net revenues.  During
2000,  Periostat  accounted  for 84% of our total  net  revenues.  During  2001,
Periostat accounted for approximately 87% of our total net revenues. Although we
currently derive additional revenue from co-promoting another product (Vioxx(R))
and from  licensing  fees from  foreign  marketing  partners,  our  revenue  and
profitability  in the near future  will  depend on our  ability to  successfully
market and sell Periostat.

     WE ANTICIPATE FUTURE LOSSES.

     From our  founding in 1992  through the  commercial  launch of Periostat in
November,  1998,  we had no revenue from sales of our own  products.  During the
year ended  December 31, 2000, we experienced a net loss of  approximately  $8.8
million.  During the year ended  December 31, 2001, we experienced a net loss of
approximately  $8.1 million.  From inception  through December 31, 2001, we have
experienced an aggregate net loss of $69.5 million.  Our historical  losses have
resulted  primarily  from  the  expenses   associated  with  our  pharmaceutical
development program, clinical trials, the regulatory approval process associated
with  Periostat and sales and  marketing  activities  relating to Periostat.  We
expect to incur  significant  future expenses,  particularly with respect to the
sales and marketing of Periostat.  As a result, we anticipate losses through the
second quarter of 2002.

                                      -6-


     WE  HAVE A  LIMITED  MARKETING  AND  SALES  HISTORY  AND MAY NOT BE ABLE TO
SUCCESSFULLY MARKET OUR PRODUCT CANDIDATES.

     We  have  a  limited  history  of  marketing,   distributing   and  selling
pharmaceutical  products in the dental market. In January 1999, we first trained
a sales  force  of sales  representatives  and  managers  and  began to  promote
Periostat to the dental community. We market and sell our products in the United
States  through  this direct  sales  force.  Furthermore,  we have  entered into
agreements to market Periostat, upon receipt of the necessary foreign regulatory
approvals,  in certain countries in Europe, Israel, Japan, Canada and the Middle
East, and we continue to evaluate  partnering  arrangements  in other  countries
outside the United  States.  If we are unable to continue to recruit,  train and
retain sales and marketing  personnel,  we will be unable to successfully expand
our sales and marketing  efforts.  Furthermore,  if our foreign  partners do not
devote sufficient resources to perform their contractual obligations with us, we
may not  achieve  our  foreign  sales  goals.  In June 2001,  we  announced  the
availability  of  Dentaplex,  our  nutritional  supplement  formulated  to  help
maintain optimal oral health.  Pursuant to an exclusive  Licensing and Marketing
Agreement with Atrix Laboratories,  Inc., we began marketing Atrix's proprietary
dental products,  Atridox(R),  Atrisorb(R)-Free  Flow and Atrisorb(R)-D,  to the
United  States  dental  market in  October  2001.  It is too early to  determine
whether  there will be  sufficient  acceptance  of these  products to achieve or
maintain profitability.

     OUR  COMPETITIVE  POSITION  IN THE  MARKETPLACE  DEPENDS ON  ENFORCING  AND
SUCCESSFULLY DEFENDING OUR INTELLECTUAL PROPERTY RIGHTS.

     In order to be competitive in the pharmaceutical  industry, it is important
to  establish,   enforce,  and  successfully  defend  patent  and  trade  secret
protection  for  our  established  and new  technologies.  We  must  also  avoid
liability from infringing the proprietary rights of others.

     Our core  technology is licensed from The Research  Foundation of the State
University of New York ("SUNY"),  and other  academic and research  institutions
collaborating  with  SUNY.  Under the  license  agreement  with SUNY (the  "SUNY
License") we have an  exclusive  worldwide  license to SUNY's  rights in certain
patents  and  patent   applications   to  make  and  sell   products   employing
tetracyclines  to treat certain  disease  conditions.  The SUNY License  imposes
various  payment and reporting  obligations on us and our failure to comply with
these  requirements  permits SUNY to  terminate  the SUNY  License.  If the SUNY
License  is  terminated,  we would lose our right to  exclude  competitors  from
commercializing  similar  products,  and we could be excluded from marketing the
same products if SUNY licensed the underlying  technology to a competitor  after
terminating the SUNY License.

     SUNY owns  thirty (30) United  States  patents and three (3) United  States
patent  applications  that are  licensed to us. The patents  licensed  from SUNY
expire  between 2004 and 2018.  Two of the patents are related to Periostat  and
expire in 2004 and 2007.  Technology  covered by these patents becomes available
to competitors as the patents expire.

     Since many of our patent rights cover new treatments  using  tetracyclines,
which are  generally  available  for their known use as  antibiotics,  we may be
required  to bring  expensive  infringement  actions to enforce  our patents and
protect  our  technology.  Although  federal  law  prohibits  making and selling
pharmaceuticals for infringing use, competitors and/or practitioners may provide
generic  forms of  tetracycline  for  treatment(s)  which  infringe our patents,
rather than  prescribe  our  Periostat  product.  Enforcement  of patents can be
expensive and time consuming.

     Our success also  depends upon  know-how,  trade  secrets,  and the skills,
knowledge and experience of our scientific and technical personnel. To that end,
we require all of our employees and, to the extent  possible,  all  consultants,
advisors and research  collaborators,  to enter into confidentiality

                                      -7-


agreements prohibiting unauthorized disclosure.  With respect to information and
chemical   compounds  we  provide  for  testing  to  collaborators  in  academic
institutions, we cannot guarantee that the institutions will not assert property
rights  in the  results  of such  tests  nor that a  license  can be  reasonably
obtained from such institutions which assert such rights.  Failure to obtain the
benefit of such testing  could  adversely  affect our  commercial  position and,
consequently, our financial condition.

     IF WE LOSE OUR SOLE SUPPLIER OF DOXYCYCLINE OR OUR CURRENT  MANUFACTURER OF
PERIOSTAT,  OUR  COMMERCIALIZATION  OF  PERIOSTAT  WILL BE  INTERRUPTED  OR LESS
PROFITABLE.

     We rely on a single supplier,  Hovione  International  Limited ("Hovione"),
for doxycycline,  the active  ingredient in Periostat.  There are relatively few
alternative  suppliers of doxycycline  and Hovione  produces the majority of the
doxycycline used in the United States. Our current supply agreement with Hovione
expires on May 14,  2006 and  thereafter  automatically  renews  for  successive
two-year  periods  unless,  ninety (90) days prior to the expiration of any such
periods,  either party gives the other party written notice of  termination.  In
addition,  in the  event  of a  default,  uncured  for  ninety  (90)  days,  the
non-defaulting party can terminate the supply agreement effective immediately at
the end of such  90-day  period.  We rely on  Hovione  as our sole  supplier  of
doxycycline  and have no  back-up  supplier  at this  time.  If we are unable to
procure a commercial quantity of doxycycline from Hovione on an ongoing basis at
a competitive  price,  or if we cannot find a  replacement  supplier in a timely
manner or with favorable pricing terms, our costs may increase significantly and
we may experience delays in the supply of Periostat.

     We  historically  relied  on a single  third-party  contract  manufacturer,
Applied Analytical  Industries,  Inc., ("AAI") to produce Periostat in a capsule
formulation.  AAI served  notice of its intent to  terminate  its  agreement  to
supply  Periostat  capsules to us as of November  2001.  The agreement  with AAI
provided for AAI to commit to an additional twelve (12) months supply of product
at a price premium, should we be unable to qualify an alternative  manufacturing
source  subsequent to the  termination of the AAI agreement.  As an alternative,
and in an effort to capitalize on certain manufacturing cost advantages, in July
2001, we launched our new tablet formulation of Periostat which has now replaced
our capsule formulation of Periostat.  The Company believes that the change to a
tablet formulation will positively impact its results of operations by improving
its gross margin on Periostat sales from  approximately 78% to approximately 88%
of  Periostat  net sales.  We have  entered  into an  agreement  with a contract
manufacturer, Pharmaceutical Manufacturing Research Services, Inc. ("PMRS"), for
such  tablet  formulation  for  Periostat,  and we  are,  therefore,  no  longer
dependent upon, nor do we utilize, AAI. We have placed purchase orders with PMRS
and have  committed  to  certain  minimum  purchases  from  PMRS  through  2002.
Currently, PMRS is the sole third-party contract manufacturer to supply a tablet
formulation  of  Periostat  to us. Any  inability  of PMRS to produce and supply
product on agreed upon terms could result in delays in the supply of  Periostat.
We also intend to contract  with  additional  manufacturers  for the  commercial
manufacture of Periostat tablets. We believe,  however, that it could take up to
one (1) year to successfully transition from PMRS to a new manufacturer.

     OUR PRODUCTS ARE SUBJECT TO EXTENSIVE REGULATION BY THE FDA.

     Drugs and medical devices  generally require approval or clearance from the
FDA before they can be marketed in the United States.  Periostat,  Vioxx(R), and
Atridox(R)  have been approved by the FDA as drugs.  Atrisorb(R) - Free Flow and
Atrisorb(R)-D have been cleared by the FDA as medical devices. Our drug products
under development,  however, will have to be approved by the FDA before they can
be marketed in the United States.  If the FDA does not approve our products in a
timely fashion,  or does not approve them at all, our financial condition may be
adversely affected.

                                      -8-


     In  addition,   drug  and  medical  device   products   remain  subject  to
comprehensive  regulation by the FDA while they are being marketed. The drug and
medical device  regulatory  schemes differ in detail,  but they are  essentially
similar. The FDA regulates,  for example, the safety,  manufacturing,  labeling,
and promotion of both drug and medical device products.  Although  Dentaplex,  a
dietary supplement,  did not require FDA approval prior to marketing, it is also
subject to  regulation  while it is being  marketed.  If we or our  partners who
manufacture  our products fail to comply with regulatory  requirements,  various
adverse consequences can result, including recalls, civil penalties,  withdrawal
of the  product  from the market  and/or  the  imposition  of civil or  criminal
sanctions.

     We  are,  and  will  increasingly  be,  subject  to a  variety  of  foreign
regulatory  regimes governing  clinical trials and sales of our products.  Other
than  Periostat,  which has been  approved by the Medicines  Control  Agency for
marketing  in the United  Kingdom,  our  products in  development  have not been
approved in any foreign country.  Whether or not FDA approval has been obtained,
approval of drug products by the  comparable  regulatory  authorities of foreign
countries  must be obtained  prior to the  commencement  of  marketing  of those
products in those countries. The approval process varies from country to country
and other countries may also impose post-approval requirements.  Other countries
may also impose regulatory requirements on dietary supplements.

     IF OUR  PRODUCTS  CAUSE  INJURIES,  WE MAY INCUR  SIGNIFICANT  EXPENSE  AND
LIABILITY.

     Our business may be adversely affected by potential product liability risks
inherent in the testing,  manufacturing  and  marketing  of Periostat  and other
products  developed by or for us or for which we have licensing or  co-promotion
rights. We have $10.0 million in product liability insurance for Periostat. This
level of  insurance  may not  adequately  protect us against  product  liability
claims. Insufficient insurance coverage or the failure to obtain indemnification
from third  parties for their  respective  liabilities  may expose us to product
liability  claims  and/or  recalls  and  could  cause  our  business,  financial
condition and results of operations to decline.

     IF WE NEED ADDITIONAL FINANCING, AND FINANCING IS UNAVAILABLE,  OUR ABILITY
TO DEVELOP AND  COMMERCIALIZE  PRODUCTS  AND OUR  OPERATIONS  WILL BE  ADVERSELY
AFFECTED.

     We have  historically  financed our  operations  through public and private
equity  financings.   Our  capital  requirements  depend  on  numerous  factors,
including  our  ability  to  successfully  commercialize  Periostat,   competing
technological and market  developments,  our ability to enter into collaborative
arrangements for the development,  regulatory approval and  commercialization of
other  products,  and the cost of filing,  prosecuting,  defending and enforcing
patent claims and other intellectual  property rights. We anticipate that we may
be required  to raise  additional  capital in order to conduct  our  operations.
Additional funding, if necessary, may not be available on favorable terms, if at
all.  If  adequate  funds  are not  available,  we may be  required  to  curtail
operations   significantly  or  to  obtain  funds  through   arrangements   with
collaborative  partners or others that may  require us to  relinquish  rights to
certain of our technologies,  product candidates, products or potential markets.
At December 31, 2001 we had cash, cash equivalents and short-term investments of
approximately $6.2 million. In March 2001, we raised approximately $6.8 million,
net of  offering  costs,  through the sale of our common  stock and  warrants to
purchase  shares of our common stock.  In August 2001,  we raised  approximately
$3.0  million  through the sale of  unregistered  shares of our common  stock to
Atrix Laboratories,  Inc. in connection with our entering into certain licensing
arrangements with Atrix. We anticipate that our existing working capital will be
sufficient  to fund our  current  operations  through  at least the end of 2002.
However, we may seek additional funding to expand our current operations through
the acquisition of additional products or by investing in the development of our
research and development pipeline.

                                      -9-



     BECAUSE OUR  EXECUTIVE  OFFICERS,  DIRECTORS  AND  AFFILIATED  ENTITIES OWN
APPROXIMATELY  32.6% OF OUR CAPITAL  STOCK,  THEY COULD CONTROL OUR ACTIONS IN A
MANNER  THAT  CONFLICTS  WITH  OUR  INTERESTS  AND THE  INTERESTS  OF OUR  OTHER
STOCKHOLDERS.

     Currently,  our  executive  officers,  directors  and  affiliated  entities
together  beneficially own approximately  32.6% of the outstanding shares of our
common stock or equity  securities  convertible  into common stock. As a result,
these  stockholders,   acting  together,   or  in  the  case  of  our  preferred
stockholders, in certain instances, as a class, will be able to exercise control
over corporate actions requiring stockholder approval, including the election of
directors.  This  concentration  of ownership may have the effect of delaying or
preventing a change in control, including transactions in which our stockholders
might  otherwise  receive a premium for their  shares over then  current  market
prices.

         WE EXPECT TO SELL SHARES OF OUR COMMON STOCK IN THE  FUTURE,  INCLUDING
SHARES ISSUED UNDER OUR EQUITY LINE WITH  KINGSBRIDGE  CAPITAL LIMITED AND THESE
SALES WILL DILUTE THE INTERESTS OF SECURITY HOLDERS AND DEPRESS THE PRICE OF OUR
COMMON STOCK.

     As of December 31, 2001,  there were 10,999,573  shares of our common stock
outstanding,  options to purchase  approximately  2,452,609 shares of our common
stock outstanding, and there were outstanding warrants to purchase approximately
550,000 shares of our common stock outstanding. There are also 924,880 shares of
common  stock  which are  issuable  under the equity line with  Kingsbridge  and
40,000 shares  issuable  under the warrants  which we granted to  Kingsbridge in
connection with the equity line arrangement. We may also issue additional shares
in acquisitions,  financings or in connection with the grant of additional stock
options to our employees,  officers,  directors or  consultants  under our stock
option plans.

     The  issuance or even the  potential  issuance  of shares  under the equity
line, in connection with any other  additional  financing,  and upon exercise of
warrants,  options or rights will have a dilutive  impact on other  stockholders
and could have a negative  effect on the market  price of our common  stock.  In
addition,  if we draw down  under  the  equity  line,  we will  issue  shares to
Kingsbridge  at a discount to the daily volume  weighted  average  prices of our
common  stock  during the fifteen  (15)  trading  days after  notification  of a
drawdown. This will further dilute the interests of the other stockholders.

     If we draw down on the equity  line when share  prices are  decreasing,  we
will need to issue more  shares,  which will lead to  dilution  and  potentially
further price decrease.

     As we sell shares of our common stock to Kingsbridge  under the equity line
and then Kingsbridge  sells the common stock to third parties,  our common stock
price may decrease due to the additional  shares in the market.  If we decide to
draw down on the equity line as the price of our common stock decreases, we will
need to issue more shares of our common stock for any given  dollar  amount that
Kingsbridge  invests,  subject to the  minimum  selling  price we  specify.  The
perceived risk of dilution from sales of stock to Kingsbridge  may cause holders
of our common stock to sell their shares,  or it may encourage short sales. This
could contribute to a decline in our share price.  Kingsbridge has covenanted in
the equity line arrangement  that neither  Kingsbridge nor any of its affiliates
nor any entity managed by Kingsbridge  will ever be in a net short position with
respect to shares of our common  stock in any  accounts  directly or  indirectly
managed by any such  person or entity.  The more  shares that we issue under the
equity  line of credit,  the more  diluted  our shares  will be and the more our
stock price may  decrease.  This may  encourage  short sales,  which could place
further downward pressure on the price of our common stock.

         OUR STOCK PRICE IS  HIGHLY  VOLATILE, AND  THEREFORE THE  VALUE OF YOUR
INVESTMENT MAY FLUCTUATE SIGNIFICANTLY.

     The market  price of our common  stock has  fluctuated  and may continue to
fluctuate as a result of variations in our quarterly  operating  results.  These
fluctuations may be exaggerated if the trading volume

                                      -10-


of our  common  stock is low.  In  addition,  the stock  market in  general  has
experienced  dramatic  price and volume  fluctuations  from time to time.  These
fluctuations may or may not be based upon any business or operating results. Our
common  stock may  experience  similar  or even more  dramatic  price and volume
fluctuations which may continue indefinitely. The following table sets forth the
high and low closing  market price for our common stock for each of the quarters
in the period beginning January 1, 1999 through December 31, 2001 as reported on
the Nasdaq National Market:


             QUARTER ENDED                  HIGH              LOW

 March 31, 1999.....................       $12.19             $8.25
 June 30, 1999......................       $11.25             $8.25
 September 30, 1999.................       $22.38             $9.50
 December 31, 1999..................       $25.00            $15.75
 March 31, 2000.....................       $27.13            $12.63
 June 30, 2000......................       $15.50             $8.25
 September 30, 2000.................        $9.88             $8.06
 December 31, 2000..................        $7.88             $3.13
 March 31, 2001.....................        $6.00             $4.47
 June 30, 2001......................        $8.80             $5.06
 September 30, 2001.................       $10.00             $7.25
 December 31, 2001..................        $9.50             $7.50


               SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION

     This   prospectus   and   the   documents   incorporated   herein   contain
forward-looking  statements  within the meaning of Section 27A of the Securities
Act of 1933, as amended,  and Section 21E of the  Securities and Exchange Act of
1934,  as  amended.  For  this  purpose,  any  statements  contained  herein  or
incorporated   herein  that  are  not  statements  of  historical  fact  may  be
forward-looking  statements.  For example,  the words "may," "will," "continue,"
"believes,"  "expects,"  "anticipates,"  "intends,"  "estimates,"  "should"  and
similar expressions are intended to identify forward-looking  statements.  There
are a number of  important  factors  that could  cause  CollaGenex's  results to
differ materially from those indicated by such forward-looking statements. These
factors  include  those set forth in the section  entitled  "Risk  Factors."  In
particular,   CollaGenex's   business  of  selling,   marketing  and  developing
pharmaceutical  products is subject to a number of significant risks,  including
risks relating to the  implementation of CollaGenex's  sales and marketing plans
for Periostat(R)  and other products that we market,  risks inherent in research
and development  activities,  risks  associated  with  conducting  business in a
highly  regulated  environment  and  uncertainty  relating to clinical trials of
products under development.  CollaGenex's success depends to a large degree upon
the market acceptance of Periostat by periodontists, dental practitioners, other
health  care  providers,  patients  and  insurance  companies.  There  can be no
assurance that CollaGenex's product candidates (other than the FDA's approval of
Periostat for marketing in the United  States and the United  Kingdom  Medicines
Control Agency's approval of Periostat for marketing in the United Kingdom) will
be approved by any regulatory authority for marketing in any jurisdiction or, if
approved,  that  any  such  products  will  be  successfully  commercialized  by
CollaGenex.  In  addition,  there  can  be no  assurance  that  CollaGenex  will
successfully commercialize Dentaplex(TM), Vioxx(R), Atridox(R), Atrisorb(R)-Free
Flow and Atrisorb(R)-D. As a result of such risks and others expressed from time
to time in  CollaGenex's  filings with the Securities  and Exchange  Commission,
CollaGenex's  actual results may differ materially from the results discussed in
or implied by the forward-looking statements contained herein.

                                      -11-




                                 USE OF PROCEEDS

     We will  receive all of the net  proceeds  from the sale of our  securities
registered under the registration statement of which this prospectus is a part.

     Unless the  applicable  prospectus  supplement  states  otherwise,  we will
retain broad  discretion in the allocation of the net proceeds of this offering.
We  currently  intend to use the net  proceeds of this and any future  issuances
for:

     o    research and development of additional products;

     o    expansion of our sales and marketing capabilities;

     o    potential product acquisitions; and

     o    other  general  corporate  purposes,   including  principally  working
          capital and capital expenditures.

     We have not  determined  the amount of net  proceeds to be used for each of
the specific purposes indicated.  The amounts and timing of the expenditures may
vary  significantly  depending on numerous factors,  such as the progress of our
research and  development  efforts,  technological  advances and the competitive
environment for our products.  Accordingly, we will have broad discretion to use
the  proceeds  as we see fit.  Pending  such  uses,  we intend to invest the net
proceeds in interest-bearing, investment grade securities.

                              PLAN OF DISTRIBUTION

     We have not yet issued or sold any shares of our  common  stock  under this
Registration Statement on Form S-3.

     We are  offering up to 924,880  shares of our common  stock to  Kingsbridge
Capital Limited which has obligated itself,  subject to certain  conditions,  to
purchase such shares pursuant to this registration  statement.  The common stock
will be purchased pursuant to the terms of a Common Stock Purchase Agreement, or
equity line  arrangement  that we entered into with  Kingsbridge on February 14,
2002.  The terms and  conditions of the equity line  arrangement  are more fully
described  herein  beginning  on page 3 under  the title "The  Equity  Line." An
additional  40,000  shares of common  stock  underlying  a warrant  we issued to
Kingsbridge in connection with the equity line are also registered hereunder.

     Kingsbridge  Capital Limited will be and any brokers-dealers or agents that
are involved in selling shares acquired by Kingsbridge under the equity line may
be deemed to be "underwriters"  within the meaning of the Securities Act of 1933
in  connection  with  their  sales.  Prior  to  entering  into the  equity  line
arrangement with us, Kingsbridge did not own any shares of our common stock.

     Upon the sale of shares under this registration  statement,  the securities
registered by this  registration  statement will be freely tradable in the hands
of persons other than our  affiliates.  Kingsbridge has covenanted in the equity
line  arrangement  that neither  Kingsbridge  nor any of its  affiliates nor any
entity managed by Kingsbridge  will ever be in a net short position with respect
to shares of our common stock in any accounts directly or indirectly  managed by
any such person or entity.

     We agreed,  under the terms of the Common Stock  Purchase  Agreement by and
between us and  Kingsbridge  Capital  Limited  to  indemnify  and hold  harmless
Kingsbridge Capital Limited, each person, if

                                      -12-


any, who controls  Kingsbridge  Capital Limited within the meaning of Section 15
of the Securities Act of 1933, as amended, and each officer, director,  employee
and agent of  Kingsbridge  Capital  Limited and of any such  controlling  person
against any and all  liabilities,  claims,  damages or expenses  whatsoever,  as
incurred, arising out of or resulting from any breach or alleged breach or other
violation  of  any  representation,  warranty,  covenant  or  undertaking  by us
contained in such Common Stock Purchase  Agreement.  We have agreed to reimburse
Kingsbridge  Capital  Limited  for  its  reasonable  legal  and  other  expenses
(including  the  reasonable  cost  of any  investigation  and  preparation,  and
including the  reasonable  fees and expenses of counsel)  incurred in connection
therewith.

                                  LEGAL MATTERS

     The  validity of the shares of common stock  offered  hereby will be passed
upon by Hale and Dorr LLP, Princeton, New Jersey.

                                     EXPERTS

     The   consolidated   financial   statements   and  schedule  of  CollaGenex
Pharmaceuticals, Inc. and subsidiaries as of December 31, 1999 and 2000, and for
each of the years in the three-year  period ended  December 31, 2000,  have been
incorporated by reference herein and in the  registration  statement in reliance
upon the report of KPMG LLP, independent accountants,  incorporated by reference
herein,  and upon the  authority  of said  firm as  experts  in  accounting  and
auditing.  The report of KPMG LLP  covering  the  December  31,  2000  financial
statements  contains  an  explanatory  paragraph  that  states  that the Company
adopted  the  provisions  of the  Securities  and  Exchange  Commission's  Staff
Accounting Bulletin No. 101, "Revenue Recognition in Financial  Statements",  in
2000.

                       WHERE YOU CAN FIND MORE INFORMATION

     We file reports, proxy statements and other documents with the SEC. You may
read  and  copy any  document  we file at the  SEC's  public  reference  room at
Judiciary Plaza Building,  450 Fifth Street N.W.,  Room 1024,  Washington,  D.C.
20549.  You  should  call  1-800-SEC-0330  for more  information  on the  public
reference  room. Our SEC filings are also available to you on the SEC's Internet
site at http://www.sec.gov.

     This prospectus is part of a registration  statement that we filed with the
SEC. The registration  statement  contains more information than this prospectus
regarding us and our common stock, including certain exhibits and schedules. You
can  obtain a copy of the  registration  statement  from the SEC at the  address
listed above or from the SEC's Internet site.

                      INFORMATION INCORPORATED BY REFERENCE

     The Securities and Exchange Commission allows CollaGenex to "incorporate by
reference"  the  information  CollaGenex  files with the Securities and Exchange
Commission,  which means that CollaGenex 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
CollaGenex  files  later  with  the  Securities  and  Exchange  Commission  will
automatically update and supersede this information.  CollaGenex incorporates by
reference the documents  listed below and any future  filings made by CollaGenex
with the Securities and Exchange  Commission under Sections 13(a),  13(c), 14 or
15(d)  of  the  Exchange  Act  of  1934,  as  amended,  until  the  filing  of a
post-effective  amendment to this prospectus which indicates that all securities
registered  have been sold or which  deregisters  all securities  then remaining
unsold:

                                      -13-



          o    CollaGenex's Annual Report on Form 10-K for the fiscal year ended
               December  31,  2000  filed  with  the   Securities  and  Exchange
               Commission  on March 26,  2001,  as amended on Form 10-K/A  filed
               with  Securities  and Exchange  Commission  on January 2, 2002 to
               disclose information regarding the financial position, results of
               operations and cash flows of CollaGenex and its subsidiaries;

          o    CollaGenex's Current Report on Form 8-K filed with the Securities
               and Exchange Commission on March 16, 2001;

          o    CollaGenex's   Current  Report  on  Form  8-K/A  filed  with  the
               Securities and Exchange Commission on April 3, 2001;

          o    CollaGenex's  Definitive  Proxy  materials for the Company's 2001
               Annual  Meeting of  Stockholders,  filed with the  Securities and
               Exchange Commission on April 18, 2001;

          o    CollaGenex's Quarterly Report on Form 10-Q for the fiscal quarter
               ended  March 31,  2001 filed  with the  Securities  and  Exchange
               Commission on May 15, 2001, to disclose information regarding the
               financial  position,  results  of  operations  and cash  flows of
               CollaGenex and its subsidiaries;

          o    CollaGenex's Current Report on Form 8-K filed with the Securities
               and Exchange Commission on July 20, 2001;

          o    CollaGenex's Quarterly Report on Form 10-Q for the fiscal quarter
               ended  June 30,  2001  filed  with the  Securities  and  Exchange
               Commission on August 14, 2001, to disclose information  regarding
               the financial  position,  results of operations and cash flows of
               CollaGenex and its subsidiaries;

          o    CollaGenex's Current Report on Form 8-K filed with the Securities
               and Exchange Commission on October 18, 2001;

          o    CollaGenex's Quarterly Report on Form 10-Q for the fiscal quarter
               ended  September 30, 2001 filed with the  Securities and Exchange
               Commission  on November 14, 2001, as amended on Form 10-Q/A filed
               with the Securities and Exchange Commission on February 14, 2002,
               to disclose information regarding the financial position, results
               of operations and cash flows of CollaGenex and its subsidiaries;

          o    CollaGenex's Current Report on Form 8-K filed with the Securities
               and Exchange Commission on December 10, 2001; and

          o    The  description of  CollaGenex's  common stock,  $.01 par value,
               which is contained in CollaGenex's Registration Statement on Form
               8-A filed  pursuant to Section 12(g) of the Exchange Act of 1934,
               as amended,  in the form declared effective by the Securities and
               Exchange  Commission on June 20, 1996,  including any  subsequent
               amendments  or reports  filed for the  purpose of  updating  such
               description.

                                      -14-



     CollaGenex  will provide to any person,  including any beneficial  owner of
its securities,  to whom this  prospectus is delivered,  a copy of any or all of
the information  that has been  incorporated by reference in this prospectus but
not delivered with this Prospectus. You may make such requests at no cost to you
by writing or telephoning CollaGenex at the following address or number:

                          CollaGenex Pharmaceuticals, Inc.
                          41 University Drive
                          Newtown, Pennsylvania 18940
                          Attention: Chief Financial Officer
                          Telephone: (215) 579-7388

     You  should  rely only on the  information  incorporated  by  reference  or
provided in this  prospectus or any  prospectus  supplement.  CollaGenex has not
authorized anyone else to provide you with different information.  CollaGenex is
not  making an offer of these  securities  in any  state  where the offer is not
permitted.  You should not assume that the information in this prospectus or any
prospectus  supplement  is  accurate  as of any date  other than the date on the
front of those documents.

                    INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Subsection  (a) of Section  145 of the  Delaware  General  Corporation  Law
empowers a  corporation  to indemnify  any person who was or is threatened to be
made a party to any threatened, pending or completed action, suit or proceeding,
whether civil,  criminal,  administrative or investigative (other than an action
by or in the right of the  corporation)  by reason of the fact that he or she is
or was a director,  officer, employee or agent of the corporation,  or is or was
serving at the request of the  corporation as a director,  officer,  employee or
agent  of  another  corporation,  partnership,  joint  venture,  trust  or other
enterprise,  against expenses (including attorneys' fees), judgments,  fines and
amounts paid in  settlement  actually and  reasonably  incurred by him or her in
connection with such action, suit or proceeding if he or she acted in good faith
and in a manner he or she  reasonably  believed  to be in or not  opposed to the
best interests of the  corporation,  and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.

     Subsection  (b) of Section 145  empowers a  corporation  to  indemnify  any
person  who  was or is a  party  or is  threatened  to be  made a  party  to any
threatened,  pending  or  completed  action  or suit by or in the  right  of the
corporation  to procure a judgment in its favor by reason of the fact that he or
she is or was a director,  officer, employee or agent of the corporation,  or is
or was  serving  at the  request  of the  corporation  as a  director,  officer,
employee or agent of another corporation,  partnership,  joint venture, trust or
other  enterprise,  against  expenses  (including  attorneys' fees) actually and
reasonably  incurred by him or her in connection  with the defense or settlement
of such  action or suit if he or she  acted in good  faith and in a manner he or
she  reasonably  believed to be in or not opposed to the best  interests  of the
corporation and except that no  indemnification  shall be made in respect of any
claim,  issue or matter as to which such person  shall have been  adjudged to be
liable  to the  corporation  unless  and only to the  extent  that the  Court of
Chancery or the court in which such action or suit was brought  shall  determine
upon application that,  despite the adjudication of liability but in view of all
of the circumstances of the case, such person is fairly and reasonably  entitled
to indemnity for such  expenses  which the Court of Chancery or such other court
shall deem proper.

     Section 145 further  provides that to the extent a director or officer of a
corporation has been successful in the defense of any action, suit or proceeding
referred to in subsection  (a) and (b) or in the defense of any claim,  issue or
matter  therein,  he or she shall be  indemnified  against  expenses  (including
attorneys'  fees) actually and  reasonably  incurred by him or her in connection
therewith;  that the indemnification provided by Section 145 shall not be deemed
exclusive of any other rights to which the

                                      -15-



indemnified party may be entitled; and that the scope of indemnification extends
to  directors,  officers,  employees,  or  agents of a  constituent  corporation
absorbed in a  consolidation  or merger and persons  serving in that capacity at
the  request  of the  constituent  corporation  for  another.  Section  145 also
empowers  a  corporation  to  purchase  and  maintain  insurance  on behalf of a
director or officer of the corporation  against any liability  asserted  against
him or her or incurred by him or her in any such  capacity or arising out of his
or her  status as such  whether or not the  corporation  would have the power to
indemnify him or her against such liabilities under Section 145.

     Article  IX  of  CollaGenex's   By-laws  specifies  that  CollaGenex  shall
indemnify its directors, officers, employees and agents because he or she was or
is a  director,  officer,  employee  or  agent of the  Corporation  or was or is
serving at the request of the  Corporation as a director,  officer,  employee or
agent of  another  entity to the full  extent  that such right of  indemnity  is
permitted by the laws of the State of Delaware. This provision of the By-laws is
deemed to be a contract  between  CollaGenex  and each  director and officer who
serves in such  capacity  at any time  while  such  provision  and the  relevant
provisions of the Delaware General Corporation Law are in effect, and any repeal
or  modification  thereof  shall  not  offset  any  action,  suit or  proceeding
theretofore or thereafter  brought or threatened  based in whole or in part upon
any such state of facts.  The affirmative vote of the holders of at least 80% of
the voting power of all  outstanding  shares of the capital stock of CollaGenex,
and, in certain  circumstances,  66 2/3% of the voting power of all  outstanding
shares of the Series D cumulative convertible preferred stock of CollaGenex,  is
required to adopt, amend or repeal such provision of the By-laws.

     CollaGenex  has  executed  indemnification  agreements  with  each  of  its
officers and directors pursuant to which CollaGenex has agreed to indemnify such
parties to the full extent permitted by law, subject to certain  exceptions,  if
such party  becomes  subject  to an action  because  such  party is a  director,
officer, employee, agent or fiduciary of CollaGenex.

     Section  102(b)(7)  of the  Delaware  General  Corporation  Law  enables  a
corporation in its certificate of incorporation to limit the personal  liability
of members of its board of directors  for  violation  of a director's  fiduciary
duty of care. This section does not, however,  limit the liability of a director
for breaching his or her duty of loyalty, failing to act in good faith, engaging
in intentional  misconduct or knowingly violating a law, or from any transaction
in which the director derived an improper  personal  benefit.  This section also
will have no effect on claims arising under the federal securities laws.

     CollaGenex's  Amended and Restated  Certificate of Incorporation limits the
liability of its directors as authorized by Section  102(b)(7).  The affirmative
vote of the  holders  of at least  75% of the  voting  power of all  outstanding
shares of the capital stock of  CollaGenex,  and, in certain  circumstances,  66
2/3% of the voting  power of all  outstanding  shares of the Series D cumulative
convertible preferred stock of CollaGenex, is required to amend such provisions.

     CollaGenex  has  obtained  liability  insurance  for  the  benefit  of  its
directors  and officers  which  provides  coverage  for losses of directors  and
officers for  liabilities  arising out of claims  against such persons acting as
directors  or officers of  CollaGenex  (or any  subsidiary  thereof)  due to any
breach of duty, neglect, error, misstatement,  misleading statement, omission or
act done by such directors and officers, except as prohibited by law.


                                      -16-



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

     The  following  table sets forth the  various  expenses  to be  incurred in
connection  with the sale and  distribution of the securities  being  registered
hereby,  all of which  will be borne by  CollaGenex  Pharmaceuticals,  Inc.  All
amounts  shown are  estimates  except the  Securities  and  Exchange  Commission
registration fee.

  Filing Fee - Securities and Exchange Commission...........$         2,191
  Legal fees and expenses...................................$        15,000
  Accounting fees and expenses..............................$         5,000
                                                                ------------
            Total Expenses..................................$        22,191
                                                                ------------
                                                                ------------

Item 15. Indemnification of Directors and Officers.

     Subsection  (a) of Section  145 of the  Delaware  General  Corporation  Law
empowers a  corporation  to indemnify  any person who was or is threatened to be
made a party to any threatened, pending or completed action, suit or proceeding,
whether civil,  criminal,  administrative or investigative (other than an action
by or in the right of the  corporation)  by reason of the fact that he or she is
or was a director,  officer, employee or agent of the corporation,  or is or was
serving at the request of the  corporation as a director,  officer,  employee or
agent  of  another  corporation,  partnership,  joint  venture,  trust  or other
enterprise,  against expenses (including attorneys' fees), judgments,  fines and
amounts paid in  settlement  actually and  reasonably  incurred by him or her in
connection with such action, suit or proceeding if he or she acted in good faith
and in a manner he or she  reasonably  believed  to be in or not  opposed to the
best interests of the  corporation,  and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.

     Subsection  (b) of Section 145  empowers a  corporation  to  indemnify  any
person  who  was or is a  party  or is  threatened  to be  made a  party  to any
threatened,  pending  or  completed  action  or suit by or in the  right  of the
corporation  to procure a judgment in its favor by reason of the fact that he or
she is or was a director,  officer, employee or agent of the corporation,  or is
or was  serving  at the  request  of the  corporation  as a  director,  officer,
employee or agent of another corporation,  partnership,  joint venture, trust or
other  enterprise,  against  expenses  (including  attorneys' fees) actually and
reasonably  incurred by him or her in connection  with the defense or settlement
of such  action or suit if he or she  acted in good  faith and in a manner he or
she  reasonably  believed to be in or not opposed to the best  interests  of the
corporation and except that no  indemnification  shall be made in respect of any
claim,  issue or matter as to which such person  shall have been  adjudged to be
liable  to the  corporation  unless  and only to the  extent  that the  Court of
Chancery or the court in which such action or suit was brought  shall  determine
upon application that,  despite the adjudication of liability but in view of all
of the circumstances of the case, such person is fairly and reasonably  entitled
to indemnity for such  expenses  which the Court of Chancery or such other court
shall deem proper.

     Section 145 further  provides that to the extent a director or officer of a
corporation has been successful in the defense of any action, suit or proceeding
referred to in subsection  (a) and (b) or in the defense of any claim,  issue or
matter  therein,  he or she shall be  indemnified  against  expenses  (including

                                      II-1


attorneys'  fees) actually and  reasonably  incurred by him or her in connection
therewith;  that the indemnification provided by Section 145 shall not be deemed
exclusive  of any other rights to which the  indemnified  party may be entitled;
and that the scope of indemnification extends to directors, officers, employees,
or agents of a constituent corporation absorbed in a consolidation or merger and
persons serving in that capacity at the request of the  constituent  corporation
for another.  Section 145 also empowers a  corporation  to purchase and maintain
insurance  on behalf of a director  or officer of the  corporation  against  any
liability  asserted  against  him or her or  incurred  by him or her in any such
capacity  or  arising  out of his or her  status  as  such  whether  or not  the
corporation  would  have  the  power  to  indemnify  him  or  her  against  such
liabilities under Section 145.

         Article IX of CollaGenex's By-laws specifies that CollaGenex shall
indemnify its directors, officers, employees and agents because he or she was or
is a director, officer, employee or agent of CollaGenex or was or is serving at
the request of CollaGenex as a director, officer, employee or agent of another
entity to the full extent that such right of indemnity is permitted by the laws
of the State of Delaware. This provision of the By-laws is deemed to be a
contract between CollaGenex and each director and officer who serves in such
capacity at any time while such provision and the relevant provisions of the
Delaware General Corporation Law are in effect, and any repeal or modification
thereof shall not offset any action, suit or proceeding theretofore or
thereafter brought or threatened based in whole or in part upon any such state
of facts. The affirmative vote of the holders of at least 80% of the voting
power of all outstanding shares of the capital stock of CollaGenex, and, in
certain circumstances, 66 2/3% of the voting power of all outstanding shares of
the Series D cumulative convertible preferred stock of CollaGenex, is required
to adopt, amend or repeal such provision of the By-laws.

         CollaGenex has executed indemnification agreements with each of its
officers and directors pursuant to which CollaGenex has agreed to indemnify such
parties to the full extent permitted by law, subject to certain exceptions, if
such party becomes subject to an action because such party is a director,
officer, employee, agent or fiduciary of CollaGenex.

         Section 102(b)(7) of the Delaware General Corporation Law enables a
corporation in its certificate of incorporation to limit the personal liability
of members of its board of directors for violation of a director's fiduciary
duty of care. This section does not, however, limit the liability of a director
for breaching his or her duty of loyalty, failing to act in good faith, engaging
in intentional misconduct or knowingly violating a law, or from any transaction
in which the director derived an improper personal benefit. This section also
will have no effect on claims arising under the federal securities laws.

         CollaGenex's Amended and Restated Certificate of Incorporation limits
the liability of its directors as authorized by Section 102(b)(7). The
affirmative vote of the holders of at least 75% of the voting power of all
outstanding shares of the capital stock of CollaGenex, and, in certain
circumstances, 66 2/3% of the voting power of all outstanding shares of the
Series D cumulative convertible preferred stock of CollaGenex, is required to
amend such provisions.

         CollaGenex has obtained liability insurance for the benefit of its
directors and officers which provides coverage for losses of directors and
officers for liabilities arising out of claims against such persons acting as
directors or officers of CollaGenex (or any subsidiary thereof) due to any
breach of duty, neglect, error, misstatement, misleading statement, omission or
act done by such directors and officers, except as prohibited by law.

                                      II-2



Item 16. Exhibits and Financial Statement Schedules.

   (a)      Exhibits

            *5.1     Opinion of Hale and Dorr LLP.

            23.1     Consent of KPMG LLP.

            *23.2    Consent of Hale and Dorr LLP (included in Exhibit 5.1).

            *24.1    Power of Attorney (included on signature page).

           --------

            * Previously filed.

Item 17. Undertakings.

     The undersigned Registrant hereby undertakes:

     (1) To file,  during any period in which  offers or sales are being made, a
post-effective amendment to this Registration Statement:

          (i)  To include any  prospectus  required  by Section  10(a)(3) of the
               Securities Act of 1933, as amended (the "Securities Act");

          (ii) To reflect in the  prospectus  any facts or events  arising after
               the effective  date of this  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   this   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 20% change
               in  the  maximum  aggregate  offering  price  set  forth  in  the
               "Calculation  of   Registration   Fee"  table  in  the  effective
               Registration Statement; and

          (iii)To include any material  information  with respect to the plan of
               distribution  not  previously   disclosed  in  this  Registration
               Statement  or any  material  change to such  information  in this
               Registration Statement;

PROVIDED,  HOWEVER,  that  paragraphs  (1)(i)  and  (1)(ii)  do not apply if the
information  required  to be  included in a  post-effective  amendment  by those
paragraphs  is  contained  in periodic  reports  filed with or  furnished to the
Commission  by the  Registrant  pursuant  to Section 13 or Section  15(d) of the
Securities  Exchange Act of 1934,  as amended  (the  "Exchange  Act"),  that are
incorporated by reference in this Registration Statement.

     (2)  That,  for  the  purposes  of  determining  any  liability  under  the
Securities  Act,  each  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 the time shall be deemed to be the initial bona
fide offering thereof.

                                      II-3



     (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 Registrant  hereby  undertakes  that,  for purposes of determining  any
liability  under the  Securities  Act,  each filing of the  Registrant's  annual
report  pursuant  to  Section  13(a) or 15(d) of the  Exchange  Act (and,  where
applicable,  each filing of an employee benefit plan's annual report pursuant to
Section  15(d) of the Exchange  Act) that is  incorporated  by reference in this
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.

     Insofar as indemnification for liabilities arising under the Securities Act
may  be  permitted  to  directors,  officers  and  controlling  persons  of  the
Registrant  pursuant to the  indemnification  provisions  described  herein,  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 Securities 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
Securities Act and will be governed by the final adjudication of such issue.


                                      II-4





                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, as amended, 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 Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Newtown, State of Pennsylvania, on February 14, 2002.

                        COLLAGENEX PHARMACEUTICALS, INC.



                        By:   /s/ Brian M. Gallagher, Ph.D.
                           --------------------------------------------------
                              Brian M. Gallagher, Ph.D.
                              President and Chief Executive Officer







     Pursuant to the  requirements  of the  Securities  Act of 1933, as amended,
this  Amendment to the  Registration  Statement has been signed by the following
persons in the capacities and on the dates indicated.





                                                                                
        Signature                           Title                                          Date
- ----------------------------      -----------------------------------                 -----------------


/s/ Brian M. Gallagher, Ph.D.     Chairman of the Board, President,                   February 14, 2002
- ----------------------------      Chief Executive Officer and
Brian M. Gallagher, Ph.D.         Director (Principal Executive Officer)


/s/ Nancy C. Broadbent            Chief Financial Officer, Treasurer and              February 14, 2002
- ----------------------------      Secretary (Principal Financial and
Nancy C. Broadbent                Accounting Officer)


          *                       Director                                            February 14, 2002
- ----------------------------
Peter Barnett, D.M.D.


          *                       Director                                            February 14, 2002
- ----------------------------
Robert C. Black


          *                       Director                                            February 14, 2002
- ----------------------------
James E. Daverman


          *                       Director                                            February 14, 2002
- ----------------------------
Robert J. Easton


          *                       Director                                            February 14, 2002
- ----------------------------
Stephen A. Kaplan


          *                       Director                                            February 14, 2002
- ----------------------------
W. James O'Shea



*   By the signature set forth below, the undersigned, pursuant to the duly
    authorized powers of attorney filed with the Securities and Exchange
    Commission has signed this Amendment to the Registration Statement on behalf
    of the person indicated.


    --------------------------------
    /s/ Nancy C. Broadbent
    Nancy C. Broadbent
    (Attorney-in-Fact)


                                      II-6



                                  EXHIBIT INDEX

  EXHIBIT NUMBER                         DESCRIPTION
  --------------     ---------------------------------------------------------
      *5.1           Opinion of Hale and Dorr LLP.

      23.1           Consent of KPMG LLP.

     *23.2           Consent of Hale and Dorr LLP (included in Exhibit
                     5.1 filed herewith).

     *24.1           Power of Attorney (included on signature page).

     *   Previously filed.