Exhibit 99.10

IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF PENNSYLVANIA



|                                                                                            |  |                          
|------------------------------------------------------------------------------------------- |  | -------------------------
|IN RE: DIET DRUGS (PHENTERMINE/FENFLURAMINE/ DEXFENFLURAMINE) PRODUCTS LIABILITY LITIGATION |  | MDL No. 1203             
|                                                                                            | 
|THIS DOCUMENT RELATES TO:SHEILA BROWN, ET. AL. V.
AMERICAN HOME PRODUCTS CORPORATION        |  | CIVIL ACTION No. 99-20593

EIGHTH AMENDMENT TO THE NATIONWIDE

CLASS ACTION SETTLEMENT AGREEMENT

WITH AMERICAN HOME PRODUCTS

Dated: August 4, 2004



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To facilitate the implementation of the November 18, 1999 Nationwide Class Action Settlement
Agreement with American Home Products Corporation (Settlement Agreement) for the benefit of the Settlement Class, it is hereby stipulated and agreed among the Parties that, subject to the approval of the Court, the Settlement Agreement
is amended as follows:

1.Mediation of Claims Subject to Show Cause Proceedings.To allow the Parties to
accelerate the payment of benefits to Class Members and to timely process to final determination Matrix claims remaining unresolved in the show cause process pursuant to Sections VI.E.7-8 of the Settlement Agreement, the following is added as a new
Section VI.E.9 [ASA p.120]:



| | 9. | The Trustees and/or Claims Administrator shall be authorized to participate in a non-binding mediation program (Mediation Program) established by the Court to resolve
Matrix claims remaining unresolved in the show cause process. Any such Mediation Program shall include the following provisions:
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | a. | Mediators. Mediations in the Mediation Program shall take place before one or more of the persons appointed by the Court to serve on the Panel of Arbitrators under PTO
No. 1988, Special Master Gregory Miller, and/or such other person or persons as the Court may direct.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | b. | Wyeth Participation. Wyeth shall be notified of and shall be a party to all mediation processes in the Mediation Program.
| | -- | -------------------------------------------------------------------------------------------------------------------------



| | c. | Resolution. In any such Mediation Process, the Trustees and/or Claims Administrator is authorized to pay such amounts as are approved by Wyeth, in its sole discretion, to
resolve finally the claims that are subject to unresolved show cause proceedings.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | d. | Release.For any claim that is paid, the Trustees and/or Claims Administrator shall, before payment, secure a general release from such Class Members with respect to any and
all rights under the Settlement Agreement, except the right to recover Matrix Compensation Benefits if the Trustees and/or Claims Administrator determine that such a Class Member has qualified for Matrix Level Benefits at Matrix Level III, IV,
and/or V.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2.Approval of this Amendment. The Parties promptly shall seek approval of this Eighth
Amendment by the Trial Court. This Eighth Amendment shall not become effective unless and until the date of the entry of an Order by the Court approving of this Eighth Amendment.

IN WITNESS WHEREOF, the Parties have duly executed this Eighth Amendment to the Nationwide Class Action Settlement Agreement between Wyeth and the Class
Representatives, by their respective counsel as set forth below, on this  day of August, 2004.

(Signature Pages Follow)



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WYETH



|                     |  |                                          
|-------------------- |  | -----------------------------------------
|By:                  |  | /s/ Douglas A. Dworkin                   
|                     |  | Douglas A. Dworkin                       
|                     |  | Vice President and Deputy General Counsel
|                    
|Date: August 4, 2004

CLASS COUNSEL



|                                                                                     |  |  |  |                                                                                                   
|------------------------------------------------------------------------------------ |  |  |  | --------------------------------------------------------------------------------------------------
|/s/ Arnold Levin                                                                     |  |  |  | /s/ Gene Locks                                                                                    
|Arnold Levin, Esquire                                                                |  |  |  | Gene Locks, Esquire                                                                               
|Levin, Fishbein, Sedran & Berman 510 Walnut
Street, Suite 500 Philadelphia, PA 19106 |  |  |  | Locks Law Firm 1500 Walnut Street Philadelphia, PA 19102                                          
|                                                                                     |  | 
|Date: August 4, 2004                                                                 |  |  |  | Date: August 4, 2004                                                                              
|                                                                                     |  | 
|/s/ Michael D. Fishbein                                                              |  |  |  | /s/ Sol H. Weiss                                                                                  
|Michael D. Fishbein, Esquire                                                         |  |  |  | Sol H. Weiss, Esquire                                                                             
|Levin, Fishbein, Sedran & Berman 510 Walnut
Street, Suite 500 Philadelphia, PA 19106 |  |  |  | Anapol, Schwartz, Weiss, Cohan, Feldman &
Smalley, P.C. 1900 Delancey Place Philadelphia, PA
19103
|                                                                                     |  | 
|Date: August 4, 2004                                                                 |  |  |  | Date: August 4, 2004                                                                              



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|                                                                                                       |  |  |  |                                                                                   
|------------------------------------------------------------------------------------------------------ |  |  |  | ----------------------------------------------------------------------------------
|/s/ Stanley Chesley                                                                                    |  |  |  | /s/ Charles R. Parker                                                             
|Stanley Chesley, Esquire                                                                               |  |  |  | Charles R. Parker, Esquire                                                        
|Waite, Schneider, Bayless & Chesley
1513 Central Trust Tower Fourth & Vine Sts. Cincinnati, Ohio 45202 |  |  |  | Locke, Liddell & Sapp, LLP 3400 JP Morgan Chase
Tower 600 Travis Houston, TX 77002
|                                                                                                       |  | 
|Date: August 4, 2004                                                                                   |  |  |  | Date: August 4, 2004                                                              
|                                                                                                       |  | 
|/s/ John J. Cummings                                                                                   |  |  |  |                                                                                   
|John J. Cummings, Esquire                                                                              |  |  |  |                                                                                   
|Cummings, Cummings & Dudenhefer 416 Gravier Street New Orleans, LA 70130                               |  |  |  |                                                                                   
|                                                                                                       |  | 
|Date: August 4, 2004                                                                                   |  |  |  |                                                                                   



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