UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                        PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

       DATE OF REPORT (Date of earliest event reported): March 21, 2005

                                      Wyeth
             (Exact name of registrant as specified in its charter)



      Delaware                        1-1225                    13-2526821
(State or other jurisdiction       (Commission File            (IRS Employer
of incorporation)                   Number)                 Identification No.)




Five Giralda Farms, Madison, New Jersey                           07940
(Address of Principal Executive Offices)                       (Zip Code)



        Registrant's telephone number, including area code:  973-660-5000


     Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     [ ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

     [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
(17 CFR 240.14a-12)

     [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

     [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))




Item 7.01.  Regulation FD Disclosure

     Attached hereto as Exhibit 99 is a press release, dated March 21, 2005,
relating to the Company's 2005 Earnings Guidance which is incorporated herein by
reference.

Item 9.01. Financial Statements and Exhibits

(c) Exhibits.

99   Press Release, dated March 21, 2005, regarding Wyeth's 2005 Earnings
     Guidance.


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                         WYETH

                                         By:   /s/ Kenneth J. Martin
                                                   Kenneth J. Martin
                                               Executive Vice President and
                                               Chief Financial Officer
                                               (Duly Authorized Signatory)


Dated:  March 21, 2005



                               EXHIBIT INDEX

Exhibit No. Description

   99       Press Release, dated March 21, 2005, regarding Wyeth's 2005 Earnings
            Guidance.