EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Form 10-K of our report dated January 25, 2000 included in American Home Products Corporation's (the Company) Annual Report to Shareholders for the year ended December 31, 1999. Furthermore, we consent to the incorporation of our reports dated January 25, 2000 included in or made part of this Form 10-K, into the Company's previously filed Registration Statements on Form S-3 (File Nos. 33-45324 and 33-57339) and on Form S-8 (File Nos. 2-96127, 33-24068, 33-41434, 33-53733, 33-55449, 33-45970, 33-14458, 33-50149, 33-55456, 333-15509 and 333-76939). ARTHUR ANDERSEN LLP New York, New York March 29, 2000