Forward Looking Statements
This web site includes "forward-looking statements" within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Such statements may include, but are not limited to, statements about the benefits of the proposed merger between Pfizer and Wyeth, including future financial and operating results, the combined company's plans, objectives, expectations and intentions and other statements that are not historical facts. Such statements are based upon the current beliefs and expectations of Pfizer's and Wyeth's management and are subject to significant risks and uncertainties. Actual results may differ from those set forth in the forward-looking statements.

The following factors, among others, could cause actual results to differ from those set forth in the forward-looking statements: the possibility that the expected synergies from the proposed merger of Pfizer and Wyeth will not be realized, or will not be realized within the expected time period, due to, among other things, the impact of pharmaceutical industry regulation and pending legislation that could affect the pharmaceutical industry; the ability to obtain governmental and self-regulatory organization approvals of the merger on the proposed terms and schedule; the failure of Wyeth stockholders to approve the merger; the risk that the businesses will not be integrated successfully; disruption from the merger making it more difficult to maintain business and operational relationships; the possibility that the merger does not close, including, but not limited to, due to the failure to satisfy the closing conditions; Pfizer's and Wyeth's ability to accurately predict future market conditions; dependence on the effectiveness of Pfizer's and Wyeth's patents and other protections for innovative products; the risk of new and changing regulation and health policies in the U.S. and internationally and the exposure to litigation and/or regulatory actions. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in Pfizer's 2007 Annual Report on Form 10-K, Wyeth's 2007 Annual Report on Form 10-K and each company's other filings with the Securities and Exchange Commission (the "SEC") available at the SEC's Internet site (http://www.sec.gov).

Additional Information
In connection with the proposed merger, Pfizer will file with the SEC a Registration Statement on Form S-4 that will include a proxy statement of Wyeth that also constitutes a prospectus of Pfizer. Wyeth will mail the proxy statement/prospectus to its stockholders. Pfizer and Wyeth urge investors and security holders to read the proxy statement/prospectus regarding the proposed merger when it becomes available because it will contain important information. You may obtain copies of all documents filed with the SEC regarding this transaction, free of charge, at the SEC's website (www.sec.gov). You may also obtain these documents, free of charge, from Pfizer's website (www.pfizer.com) under the tab "Investors" and then under the tab "SEC Filings". You may also obtain these documents, free of charge, from Wyeth's website (www.wyeth.com) under the heading "Investor Relations" and then under the tab "Financial Reports/SEC Filings".

Pfizer, Wyeth and their respective directors, executive officers and certain other members of management and employees may be soliciting proxies from Pfizer stockholders in favor of the merger. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of the Wyeth stockholders in connection with the proposed merger will be set forth in the proxy statement/prospectus when it is filed with the SEC. You can find information about Wyeth's executive officers and directors in its definitive proxy statement filed with the SEC on March 14, 2008. You can find information about Wyeth's executive officers and directors in its definitive proxy statement filed with the SEC on March 14, 2008. You can obtain free copies of these documents from Pfizer and Pfizer using the contact information above.

Some key comparisons

QUARTERLY SALES, in billions
MARKET VALUE
EMPLOYEES	83 400	46 000
KEY DRUGS	Lipitor, Lyrica, Viagra Celebrex, Chantix etc	Prevnar, Enbrel, Effexor, Premarin, Protonix etc