Exhibit 24.1
Conformed Copy

WYETH
POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned, being an officer or director, or both, of WYETH (the “Company”), in his or her capacity as set forth below, hereby constitutes and appoints Kenneth J. Martin and Jack O’Connor and each of them as his or her true and lawful attorney and agent, with full power of substitution, to do any and all acts and all things and to execute any and all instruments which said attorney and agent may deem necessary or desirable to enable the Company to comply with the Securities Act of 1933, as amended (the “Act”), and any rules, regulations and requirements of the Securities and Exchange Commission thereunder, in connection with the registration under the Act of the issuance of $1,000,000,000 notes due 2016 and $500,000,000 notes due 2036 of the Company (the “Notes”), including, without limitation, the power and authority to sign the name of each of the undersigned in the capacities indicated below to the Registration Statement on Form S-4, to be filed with the Securities and Exchange Commission with respect to such Notes (or to a related Registration Statement on Form S-3 filed pursuant to Rule 462(b) of the Act), to any and all amendments or supplements to such Registration Statements, whether such amendments or supplements are filed before or after the effective date of such Registration Statements, and to any and all instruments or documents filed as part of or in connection with such Registration Statements or any and all amendments thereto, whether such amendments are filed before or after the effective date of such Registration Statements; and each of the undersigned hereby ratifies and confirms all that such attorney and agent shall do or cause to be done by virtue hereof.

     IN WITNESS HEREOF, each of the undersigned has subscribed his or her name as of the 17th day of November, 2005.

/s/ Robert Essner
Robert Essner
Chairman of the Board, President and
Chief Executive Officer

/s/ Kenneth J. Martin
Kenneth J. Martin
Executive Vice President and Chief
Financial Officer

2

/s/ Paul J. Jones
Paul J. Jones
Vice President and Controller

/s/ Richard L. Carrión
Richard L. Carrión
Director

/s/ John D. Feerick
John D. Feerick
Director

/s/ Frances D. Fergusson
Frances D. Fergusson
Director

/s/ Robert Langer
Robert Langer
Director

/s/ John P. Mascotte
John P. Mascotte
Director

/s/ Mary Lake Polan
Mary Lake Polan
Director

/s/ Gary L. Rogers
Gary L. Rogers
Director

/s/ Ivan G. Seidenberg
Ivan G. Seidenberg
Director

3

/s/ Walter V. Shipley
Walter V. Shipley
Director

/s/ John R. Torell III
John R. Torell III
Director