EXHIBIT 12 American Home Products Corporation Computation of Ratio of Earnings To Fixed Charges (Thousands of dollars, except ratio amounts) Years Ended December 31, Earnings: 1996 1995 1994* 1993 1992 Earnings from continuing operations before taxes on income $2,755,460 $2,438,698 $2,029,760 $1,992,665 $1,724,070 Add: Fixed charges 605,011 705,047 155,187 91,500 63,403 Minority interest in earnings of consolidated subsidiary 32,496 5,642 5,303 4,027 3,803 Equity loss 0 0 1,691 0 0 Amoritization of capitalized interest 5,621 768 497 0 0 Less: Minority interest in loss of consolidated subsidiary 14,412 4,925 17,873 9,129 3,149 Equity income 10,431 8,129 0 0 0 Capitalized interest 0 7,681 9,792 14,898 0 Dividends on preferred stock of majority- owned subsidiary 0 0 0 3,436 4,589 Total earnings as defined $3,373,745 $3,129,420 $2,164,773 $2,060,729 $1,783,538 Fixed Charges: Interest and amortization of debt expense $571,414 $665,021 $116,661 $47,871 $35,503 Capitalized interest 0 7,681 9,792 14,898 0 Interest factor of rental expense (a) 33,597 32,345 28,734 25,295 23,311 Dividends on preferred stock of majority-owned subsidiary 0 0 0 3,436 4,589 Total fixed charges as defined $605,011 $705,047 $155,187 $91,500 $63,403 Ratio of earnings to fixed charges 5.6 4.4 13.9 22.5 28.1 * - The 1994 results include one month of results of American Cyanamid Company which was acquired by American Home Products Corporation effective December 1, 1994. Assuming the acquisition took place January 1, 1994, the pro forma ratio of earnings to fixed charges would be 2.9 for the year ended December 31, 1994. (a) A 1/3 factor was utilized to compute the portion of rental expenses deemed representative of the interest factor.