Exhibit 12

MERCK & CO., INC. AND SUBSIDIARIES
Computation Of Ratios Of Earnings To Fixed Charges
($ in millions except ratio data)

	Three Months
	Ended
	March 31,			Years Ended December 31,
	2007			2006			2005			2004			2003			2002
Income from Continuing Operations Before Taxes	$	2,254.4		$	6,221.4		$	7,363.9		$	7,974.5		$	9,051.6		$	9,651.7
Add (Subtract):
One-third of rents		17.0			67.8			68.2			71.9			75.6			67.2
Interest expense, gross		102.4			375.1			385.5			293.7			350.9			390.6
Interest capitalized, net of amortization		10.1			29.4			(1.0	)		(21.3	)		(30.1	)		(36.9	)
Equity (income) loss from affiliates, net of distributions		(212.3	)		(362.5	)		(615.9	)		(421.2	)		79.2			(156.1	)
Preferred stock dividends, net of tax		29.6			120.0			120.0			151.0			150.9			164.3
Earnings from Continuing Operations	$	2,201.2		$	6,451.2		$	7,320.7		$	8,048.6		$	9,678.1		$	10,080.8
One-third of rents	$	17.0		$	67.8		$	68.2		$	71.9		$	75.6		$	67.2
Interest expense, gross		102.4			375.1			385.5			293.7			350.9			390.6
Preferred stock dividends		39.5			166.0			166.7			207.1			215.6			234.7
Fixed Charges from Continuing Operations	$	158.9		$	608.9		$	620.4		$	572.7		$	642.1		$	692.5
Ratio of Earnings to Fixed Charges from Continuing Operations		14			11			12			14			15			15

For purposes of computing these ratios, “earnings” consist of income from continuing operations before taxes, one-third of rents (deemed by the Company to be representative of the interest factor inherent in rents), interest expense, net of amounts capitalized, equity (income) loss from affiliates, net of distributions, and dividends on preferred stock of subsidiary companies. “Fixed charges” consist of one-third of rents, interest expense as reported in the Company’s consolidated financial statements and dividends on preferred stock of subsidiary companies.