Exhibit 12

Wyeth

Computation of Ratio of Earnings to Fixed Charges

(in thousands except ratio amounts)

	Three Months Ended March 31, 2007		Year Ended December 31,
			2006		2005		2004		2003		2002
Earnings (Loss):
Income (loss) from continuing operations before income taxes	$1,745,340		$5,429,904		$4,780,589		$(129,847	)	$2,361,612		$6,097,245
Add:
Fixed charges	157,764		625,513		461,431		360,805		346,564		430,449
Minority interests	8,242		29,769		26,492		27,867		32,352		27,993
Amortization of capitalized interest	5,990		22,465		21,356		9,350		8,772		8,866
Less:
Equity income (loss)	(155	)	(317	)	(104	)	(524	)	(468	)	20,766
Capitalized interest	18,150		71,400		46,450		86,750		115,800		88,008
Total earnings as defined	$1,899,341		$6,036,568		$5,243,522		$181,949		$2,633,968		$6,455,779
Fixed Charges:
Interest and amortization of debt expense	$125,797		$498,847		$356,834		$221,598		$182,503		$294,160
Capitalized interest	18,150		71,400		46,450		86,750		115,800		88,008
Interest factor of rental expense (1)	13,817		55,266		58,147		52,457		48,261		48,281
Total fixed charges as defined	$157,764		$625,513		$461,431		$360,805		$346,564		$430,449
Ratio of earnings to fixed charges	12.0		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.