<PAGE>   1

     As filed with the Securities and Exchange Commission on June 29, 2001
                                                         Registration No. 333-**
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              PHARMACIA CORPORATION
               (Exact name of company as specified in its charter)

<TABLE>
<S>                                                           <C>
                  DELAWARE                                       43-0420020
   (State or Other Jurisdiction of Incorporation               (I.R.S. Employer
              or Organization)                                Identification No.)



           100 ROUTE 206 NORTH
               PEAPACK, NJ                                         07977
     (Address of principal executive offices)                    (Zip Code)
</TABLE>

                                    MONSANTO
                           SAVINGS AND INVESTMENT PLAN
                            (Full title of the plan)

                             DON W. SCHMITZ, ESQUIRE
        VICE PRESIDENT, ASSOCIATE GENERAL COUNSEL AND CORPORATE SECRETARY
                              PHARMACIA CORPORATION
                               100 ROUTE 206 NORTH
                                PEAPACK, NJ 07977
                     (Name and address of agent for service)

                                  908-901-8000
          (Telephone number, including area code, of agent for service)

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

                         Copy of all communications to:
                             ROBERT J. LICHTENSTEIN
                           MORGAN, LEWIS & BOCKIUS LLP
                               1701 MARKET STREET
                      PHILADELPHIA, PENNSYLVANIA 19103-2921
                                 (215) 963-5000

                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
============================================================================================================
                                               Proposed maximum      Proposed maximum
 Title of securities        Amount to be        Offering price          Aggregate             Amount of
   to be registered        Registered (1)        per share (2)      Offering price (2)    registration fee
------------------------------------------------------------------------------------------------------------
<S>                     <C>                   <C>                 <C>                   <C>
Pharmacia Common Stock        180,000               $49.13              $8,843,400            $2,210.85
    Plan Interests         Indeterminate              N/A                  N/A                   N/A
============================================================================================================
</TABLE>
 (1)    This Registration Statement covers 180,000 shares of the Registrant's
        Common Stock which may be offered or sold pursuant to the Monsanto
        Savings and Investment Plan. In addition, pursuant to Rule 416(c) of the
        Securities Act of 1933, this Registration Statement covers an
        indeterminate amount of plan interests which may be offered or sold
        pursuant to the Monsanto Savings and Investment Plan. Pursuant to Rule
        457(h)(2), no separate registration fee is required with respect to the
        interests in the plan. This Registration Statement also relates to an
        indeterminate number of shares of Common Stock of the Registrant which
        may be issued upon stock splits, stock dividends, or similar
        transactions in accordance with Rule 416.

(2)     Estimated pursuant to Rule 457(c) and (h) solely for the purpose of
        calculating the registration fee, based upon the average high and low
        June 25, 2001 sales prices of the Registrant's Common Stock on the New
        York Stock Exchange.


<PAGE>   2





                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENTS

ITEM 3.    INCORPORATION OF DOCUMENTS BY REFERENCE.

           The following documents filed with the U.S. Securities and Exchange
Commission (the "Commission") by Pharmacia Corporation (the "Company") pursuant
to the Securities Exchange Act of 1934, as amended (the "Exchange Act"), are
incorporated by reference in this Form S-8 Registration Statement (the
"Registration Statement") and made a part hereof:

           1.    The Company's Annual Report on Form 10-K for the year ended
December 31, 2000 (the "2000 10-K"); and

           2.    The Company's latest Quarterly Report on Form 10-Q.

           3. The description of the Common Stock of the Registrant contained on
the Registration Statement on Form S-4, which was filed with the Commission on
February 22, 2000, including any amendment thereto or report filed for the
purpose of updating such description.

           All documents and reports filed by the Company pursuant to Section
13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Registration Statement and prior to the filing of a post-effective amendment
which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of filing
of such documents or reports. Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified
or superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified shall not be deemed to
constitute a part of the Registration Statement except as so modified and any
statement so superseded shall not be deemed to constitute a part of this
Registration Statement.

ITEM 4.    DESCRIPTION OF SECURITIES.

           Not Applicable

ITEM 5.    INTERESTS OF NAMED EXPERTS AND COUNSEL.

           Not Applicable

ITEM 6.    INDEMNIFICATION OF DIRECTORS AND OFFICERS.

           Section 145 of the Delaware General Corporation Law authorizes a
court to award, or a corporation's board of directors to grant, indemnity to
directors and officers in terms sufficiently broad to permit such
indemnification under certain circumstances for liabilities (including
reimbursement for expenses incurred) arising under the Securities Act of 1933
(the "Securities Act"). The Company's Certificate of Incorporation and By-laws
provide for indemnification of its directors, officers, employees and other
agents to the maximum extent permitted by the Delaware General Corporation Law.
In addition, the Company has



                                       2
<PAGE>   3

entered into Indemnification Agreements with its executive officers and
directors. The Company has also purchased and maintained insurance for its
officers, directors, employees or agents against liabilities which an officer, a
director, an employee or an agent may incur in his capacity as such.

ITEM 7.    EXEMPTION FROM REGISTRATION CLAIMED.

           Not Applicable

ITEM 8.    EXHIBITS.

<TABLE>
<CAPTION>
                 EXHIBIT NUMBERS                             EXHIBIT
               -----------------------------------------------------------------
<S>                               <C>
                        4          Certificate of Incorporation and By-laws of
                                   Pharmacia Corporation (incorporated by
                                   reference to the Company's Registration
                                   Statement on Form S-4 filed with the
                                   Commission on February 22, 2000.)
                      23.1         Consent of Deloitte & Touche LLP
                      23.2         Consent of PricewaterhouseCoopers LLP
</TABLE>


ITEM 9.    UNDERTAKINGS.

           The undersigned 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;

                      (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; and

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

           provided, however, that subparagraphs (a)(1)(i) and (a)(1)(ii) of
           this section do not apply if the information required to be included
           in a post-effective amendment by those subparagraphs is contained in
           periodic reports filed with or furnished to the Commission by the
           Company pursuant to Section 13 or Section 15(d) of the Exchange Act
           that are incorporated by reference in the Registration Statement.

                 (2) That, for the purpose of determining any liability under
           the Securities Act, 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 that remain unsold
           at the termination of the offering.



                                       3
<PAGE>   4

           The undersigned company hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the Company's
annual report pursuant to Section 13(a) or 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 Company pursuant to the foregoing provisions, or otherwise, the Company
has been advised that in the opinion of the 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 Company of expenses incurred or paid
by a director, officer or controlling person of the Company 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
Company 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.



                                       4
<PAGE>   5



                                   SIGNATURES

           Pursuant to the requirements of the Securities Act of 1933, the
Company certifies that it has reasonable grounds to believe that it meets all of
the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Peapack, State of New Jersey on June 26, 2001.

                                    PHARMACIA CORPORATION

                                    By: /s/ Fred Hassan
                                       -----------------------------------

                                    Name:   Fred Hassan
                                    Title:  Chairman and Chief Executive Officer


               Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or amendment thereto has been signed below by the
following persons in the capacities and on the date indicated below.

                               Power of Attorney

KNOW ALL MEN BY THESE PRESENTS that each person whose signature appears below
constitutes and appoints Don W. Schmitz, attorney for me and in my name and on
my behalf to sign the Registration Statement on Form S-8, and any amendments
thereto, of Pharmacia Corporation to be filed with the Securities and Exchange
Commission under the Securities Act of 1933, with respect to the issue and sale
of shares of Common Stock of Pharmacia Corporation pursuant to the provisions of
the Monsanto Company Savings and Investment Plan, and generally to do and
perform all things necessary to be done in the premises as fully and effectually
in all respects as I could do if personally present.


<TABLE>
<CAPTION>
Signature                                   Title                             Date
---------                                   -----                             ----
<S>                                         <C>                               <C>
/s/   Fred Hassan                           Chairman and Chief                June 26, 2001
-----------------------------               Executive Officer
Fred Hassan                                 (Principal Executive Officer)


/s/  Christopher J. Coughlin                Executive Vice President          June 26, 2001
-----------------------------               and Chief Financial Officer
Christopher J. Coughlin                     (Principal Financial Officer)

</TABLE>



                                       5
<PAGE>   6



<TABLE>
<S>                                         <C>                               <C>
/s/  Robert G. Thompson                     Senior Vice President             June 26, 2001
-----------------------------               and Controller (Principal
Robert G. Thompson                          Accounting Officer)


/s/  Frank C. Carlucci                      Director                          June 26, 2001
-----------------------------
Frank C. Carlucci


/s/  M. Kathryn Eickhoff                    Director                          June 26, 2001
-----------------------------
M. Kathryn Eickhoff


/s/  Michael Kantor                         Director                          June 26, 2001
-----------------------------
Michael Kantor


/s/  Gwendolyn S. King                      Director                          June 26, 2001
-----------------------------
Gwendolyn S. King


/s/  Philip Leder, MD                       Director                          June 26, 2001
-----------------------------
Philip Leder, MD


/s/  R.L.  Berthold                         Director                          June 26, 2001
-----------------------------
R.L. Berthold Lindqvist


/s/  Olof G. Lund                           Director                          June 26, 2001
-----------------------------
Olof G. Lund


/s/  C. Steven McMillan                     Director                          June 26, 2001
-----------------------------
C. Steven McMillan


/s/  William U. Parfet                      Director                          June 26, 2001
-----------------------------
William U. Parfet


/s/  Jacobus F.M. Peters                    Director                          June 26, 2001
-----------------------------
Jacobus F.M. Peters
</TABLE>





                                       6
<PAGE>   7


<TABLE>
<S>                                         <C>                               <C>
/s/  Ulla B. Reinius                        Director                          June 26, 2001
-----------------------------
Ulla B. Reinius


/s/  William D. Ruckelshaus                 Director                          June 26, 2001
-----------------------------
William D. Ruckelshaus


/s/  Bengt I. Samuelsson                    Director                          June 26, 2001
-----------------------------
Bengt I. Samuelsson
</TABLE>




                                       7
<PAGE>   8



                                       INDEX TO EXHIBITS


<TABLE>
<CAPTION>
                 EXHIBIT NUMBERS                 EXHIBIT
               -----------------------------------------------------------------
<S>                                <C>
                        4          Certificate of Incorporation and By-laws of
                                   Pharmacia Corporation (incorporated by
                                   reference to the Company's Registration
                                   Statement on Form S-4 filed with the
                                   Commission on February 22, 2000.)
                      23.1         Consent of Deloitte & Touche LLP
                      23.2         Consent of PricewaterhouseCoopers LLP

</TABLE>




                                       8
[{"type": "S-8", "sequence": "1", "filename": "w50989s-8.txt", "description": "MONSANTO SAVINGS AND INVESTMENT PLAN", "secsgml_size_bytes": 18108}]
{"company-data": {"conformed-name": "PHARMACIA CORP /DE/", "cik": "0000067686", "assigned-sic": "2800", "irs-number": "430420020", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-64120", "film-number": "1670886"}, "business-address": {"street1": "100 ROUTE 206 NORTH", "city": "PEAPACK", "state": "NJ", "zip": "07977", "phone": "9089018000"}, "mail-address": {"street1": "100 ROUTE 206 NORTH", "city": "PEAPACK", "state": "NJ", "zip": "07977"}, "former-company": [{"former-conformed-name": "MONSANTO CO", "date-changed": "19920703"}, {"former-conformed-name": "MONSANTO CHEMICAL CO", "date-changed": "19711003"}]}
1

     As filed with the Securities and Exchange Commission on June 29, 2001
                                                         Registration No. 333-**
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              PHARMACIA CORPORATION
               (Exact name of company as specified in its charter)
DELAWARE                                       43-0420020
   (State or Other Jurisdiction of Incorporation               (I.R.S. Employer
              or Organization)                                Identification No.)

           100 ROUTE 206 NORTH
               PEAPACK, NJ                                         07977
     (Address of principal executive offices)                    (Zip Code)
MONSANTO
                           SAVINGS AND INVESTMENT PLAN
                            (Full title of the plan)

                             DON W. SCHMITZ, ESQUIRE
        VICE PRESIDENT, ASSOCIATE GENERAL COUNSEL AND CORPORATE SECRETARY
                              PHARMACIA CORPORATION
                               100 ROUTE 206 NORTH
                                PEAPACK, NJ 07977
                     (Name and address of agent for service)

                                  908-901-8000
          (Telephone number, including area code, of agent for service)

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

                         Copy of all communications to:
                             ROBERT J. LICHTENSTEIN
                           MORGAN, LEWIS & BOCKIUS LLP
                               1701 MARKET STREET
                      PHILADELPHIA, PENNSYLVANIA 19103-2921
                                 (215) 963-5000

                         CALCULATION OF REGISTRATION FEE
============================================================================================================
                                               Proposed maximum      Proposed maximum
 Title of securities        Amount to be        Offering price          Aggregate             Amount of
   to be registered        Registered (1)        per share (2)      Offering price (2)    registration fee
------------------------------------------------------------------------------------------------------------
Pharmacia Common Stock        180,000               $49.13              $8,843,400            $2,210.85
    Plan Interests         Indeterminate              N/A                  N/A                   N/A
============================================================================================================
(1)    This Registration Statement covers 180,000 shares of the Registrant's
        Common Stock which may be offered or sold pursuant to the Monsanto
        Savings and Investment Plan. In addition, pursuant to Rule 416(c) of the
        Securities Act of 1933, this Registration Statement covers an
        indeterminate amount of plan interests which may be offered or sold
        pursuant to the Monsanto Savings and Investment Plan. Pursuant to Rule
        457(h)(2), no separate registration fee is required with respect to the
        interests in the plan. This Registration Statement also relates to an
        indeterminate number of shares of Common Stock of the Registrant which
        may be issued upon stock splits, stock dividends, or similar
        transactions in accordance with Rule 416.

(2)     Estimated pursuant to Rule 457(c) and (h) solely for the purpose of
        calculating the registration fee, based upon the average high and low
        June 25, 2001 sales prices of the Registrant's Common Stock on the New
        York Stock Exchange.
2

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENTS

ITEM 3.    INCORPORATION OF DOCUMENTS BY REFERENCE.

           The following documents filed with the U.S. Securities and Exchange
Commission (the "Commission") by Pharmacia Corporation (the "Company") pursuant
to the Securities Exchange Act of 1934, as amended (the "Exchange Act"), are
incorporated by reference in this Form S-8 Registration Statement (the
"Registration Statement") and made a part hereof:

           1.    The Company's Annual Report on Form 10-K for the year ended
December 31, 2000 (the "2000 10-K"); and

           2.    The Company's latest Quarterly Report on Form 10-Q.

           3. The description of the Common Stock of the Registrant contained on
the Registration Statement on Form S-4, which was filed with the Commission on
February 22, 2000, including any amendment thereto or report filed for the
purpose of updating such description.

           All documents and reports filed by the Company pursuant to Section
13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Registration Statement and prior to the filing of a post-effective amendment
which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of filing
of such documents or reports. Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified
or superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified shall not be deemed to
constitute a part of the Registration Statement except as so modified and any
statement so superseded shall not be deemed to constitute a part of this
Registration Statement.

ITEM 4.    DESCRIPTION OF SECURITIES.

           Not Applicable

ITEM 5.    INTERESTS OF NAMED EXPERTS AND COUNSEL.

           Not Applicable

ITEM 6.    INDEMNIFICATION OF DIRECTORS AND OFFICERS.

           Section 145 of the Delaware General Corporation Law authorizes a
court to award, or a corporation's board of directors to grant, indemnity to
directors and officers in terms sufficiently broad to permit such
indemnification under certain circumstances for liabilities (including
reimbursement for expenses incurred) arising under the Securities Act of 1933
(the "Securities Act"). The Company's Certificate of Incorporation and By-laws
provide for indemnification of its directors, officers, employees and other
agents to the maximum extent permitted by the Delaware General Corporation Law.
In addition, the Company has

                                       2
3

entered into Indemnification Agreements with its executive officers and
directors. The Company has also purchased and maintained insurance for its
officers, directors, employees or agents against liabilities which an officer, a
director, an employee or an agent may incur in his capacity as such.

ITEM 7.    EXEMPTION FROM REGISTRATION CLAIMED.

           Not Applicable

ITEM 8.    EXHIBITS.
EXHIBIT NUMBERS                             EXHIBIT
               -----------------------------------------------------------------
4          Certificate of Incorporation and By-laws of
                                   Pharmacia Corporation (incorporated by
                                   reference to the Company's Registration
                                   Statement on Form S-4 filed with the
                                   Commission on February 22, 2000.)
                      23.1         Consent of Deloitte & Touche LLP
                      23.2         Consent of PricewaterhouseCoopers LLP
ITEM 9.    UNDERTAKINGS.

           The undersigned 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;

                      (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; and

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

           provided, however, that subparagraphs (a)(1)(i) and (a)(1)(ii) of
           this section do not apply if the information required to be included
           in a post-effective amendment by those subparagraphs is contained in
           periodic reports filed with or furnished to the Commission by the
           Company pursuant to Section 13 or Section 15(d) of the Exchange Act
           that are incorporated by reference in the Registration Statement.

                 (2) That, for the purpose of determining any liability under
           the Securities Act, 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 that remain unsold
           at the termination of the offering.

                                       3
4

           The undersigned company hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the Company's
annual report pursuant to Section 13(a) or 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 Company pursuant to the foregoing provisions, or otherwise, the Company
has been advised that in the opinion of the 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 Company of expenses incurred or paid
by a director, officer or controlling person of the Company 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
Company 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.

                                       4
5

                                   SIGNATURES

           Pursuant to the requirements of the Securities Act of 1933, the
Company certifies that it has reasonable grounds to believe that it meets all of
the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Peapack, State of New Jersey on June 26, 2001.

                                    PHARMACIA CORPORATION

                                    By: /s/ Fred Hassan
                                       -----------------------------------

                                    Name:   Fred Hassan
                                    Title:  Chairman and Chief Executive Officer

               Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or amendment thereto has been signed below by the
following persons in the capacities and on the date indicated below.

                               Power of Attorney

KNOW ALL MEN BY THESE PRESENTS that each person whose signature appears below
constitutes and appoints Don W. Schmitz, attorney for me and in my name and on
my behalf to sign the Registration Statement on Form S-8, and any amendments
thereto, of Pharmacia Corporation to be filed with the Securities and Exchange
Commission under the Securities Act of 1933, with respect to the issue and sale
of shares of Common Stock of Pharmacia Corporation pursuant to the provisions of
the Monsanto Company Savings and Investment Plan, and generally to do and
perform all things necessary to be done in the premises as fully and effectually
in all respects as I could do if personally present.
Signature                                   Title                             Date
---------                                   -----                             ----
/s/   Fred Hassan                           Chairman and Chief                June 26, 2001
-----------------------------               Executive Officer
Fred Hassan                                 (Principal Executive Officer)

/s/  Christopher J. Coughlin                Executive Vice President          June 26, 2001
-----------------------------               and Chief Financial Officer
Christopher J. Coughlin                     (Principal Financial Officer)
5
6
/s/  Robert G. Thompson                     Senior Vice President             June 26, 2001
-----------------------------               and Controller (Principal
Robert G. Thompson                          Accounting Officer)

/s/  Frank C. Carlucci                      Director                          June 26, 2001
-----------------------------
Frank C. Carlucci

/s/  M. Kathryn Eickhoff                    Director                          June 26, 2001
-----------------------------
M. Kathryn Eickhoff

/s/  Michael Kantor                         Director                          June 26, 2001
-----------------------------
Michael Kantor

/s/  Gwendolyn S. King                      Director                          June 26, 2001
-----------------------------
Gwendolyn S. King

/s/  Philip Leder, MD                       Director                          June 26, 2001
-----------------------------
Philip Leder, MD

/s/  R.L.  Berthold                         Director                          June 26, 2001
-----------------------------
R.L. Berthold Lindqvist

/s/  Olof G. Lund                           Director                          June 26, 2001
-----------------------------
Olof G. Lund

/s/  C. Steven McMillan                     Director                          June 26, 2001
-----------------------------
C. Steven McMillan

/s/  William U. Parfet                      Director                          June 26, 2001
-----------------------------
William U. Parfet

/s/  Jacobus F.M. Peters                    Director                          June 26, 2001
-----------------------------
Jacobus F.M. Peters
6
7
/s/  Ulla B. Reinius                        Director                          June 26, 2001
-----------------------------
Ulla B. Reinius

/s/  William D. Ruckelshaus                 Director                          June 26, 2001
-----------------------------
William D. Ruckelshaus

/s/  Bengt I. Samuelsson                    Director                          June 26, 2001
-----------------------------
Bengt I. Samuelsson
7
8

                                       INDEX TO EXHIBITS
EXHIBIT NUMBERS                 EXHIBIT
               -----------------------------------------------------------------
4          Certificate of Incorporation and By-laws of
                                   Pharmacia Corporation (incorporated by
                                   reference to the Company's Registration
                                   Statement on Form S-4 filed with the
                                   Commission on February 22, 2000.)
                      23.1         Consent of Deloitte & Touche LLP
                      23.2         Consent of PricewaterhouseCoopers LLP
8