Exhibit 12

Wyeth

Computation of Ratio of Earnings to Fixed Charges

(in thousands except ratio amounts)

	Year Ended December 31,
	2006			2005			2004			2003			2002
Earnings (Loss):
Income (loss) from continuing operations before income taxes	$	5,429,904		$	4,780,589		$	(129,847	)	$	2,361,612		$	6,097,245
Add:
Fixed charges		625,513			461,431			360,805			346,564			430,449
Minority interests		29,769			26,492			27,867			32,352			27,993
Amortization of capitalized interest		22,465			21,356			9,350			8,772			8,866
Less:
Equity income (loss)		(317	)		(104	)		(524	)		(468	)		20,766
Capitalized interest		71,400			46,450			86,750			115,800			88,008
Total earnings (loss) as defined	$	6,036,568		$	5,243,522		$	181,949		$	2,633,968		$	6,455,779
Fixed Charges:
Interest and amortization of debt expense	$	498,847		$	356,834		$	221,598		$	182,503		$	294,160
Capitalized interest		71,400			46,450			86,750			115,800			88,008
Interest factor of rental expense (1)		55,266			58,147			52,457			48,261			48,281
Total fixed charges as defined	$	625,513		$	461,431		$	360,805		$	346,564		$	430,449
Ratio of earnings to fixed charges		9.7			11.4			0.5			7.6			15.0

(1)  A  ¹/3 factor was used to compute the portion of rental expenses deemed representative of the interest factor.