Exhibit 12

MERCK & CO., INC. AND SUBSIDIARIES

Computation of Ratios of Earnings to Fixed Charges

($ in millions except ratio data)

	Years Ended December 31,
	2012			2011			2010			2009			2008
Income Before Taxes	$	8,739		$	7,334		$	1,653		$	15,290		$	9,931
Add (Subtract):
One-third of rents		133			138			144			79			75
Interest expense, gross		714			749			715			460			251
Interest capitalized, net of amortization		(49	)		(2	)		3			27			42
Equity (income) loss from affiliates, net of distributions		(350	)		(394	)		(263	)		(511	)		(494	)
Earnings as defined	$	9,187		$	7,825		$	2,252		$	15,345		$	9,805
One-third of rents	$	133		$	138		$	144		$	79		$	75
Interest expense, gross		714			749			715			460			251
Preferred stock dividends		163			138			202			143			145
Fixed Charges	$	1,010		$	1,025		$	1,061		$	682		$	471
Ratio of Earnings to Fixed Charges		9			8			2			23			21

For purposes of computing these ratios, “earnings” consist of income before taxes, one-third of rents (deemed by the Company to be representative of the interest factor inherent in rents), interest expense, interest capitalized, net of amortization and equity (income) loss from affiliates, net of distributions. “Fixed charges” consist of one-third of rents, interest expense as reported in the consolidated financial statements and dividends on preferred stock. Interest expense does not include interest related to uncertain tax positions.