Exhibit 12

MERCK & CO., INC. AND SUBSIDIARIES

Computation of Ratios of Earnings to Fixed Charges

($ in millions except ratio data)

	Twelve Months
	Ended
	December 31,			Years Ended December 31,
	2006			2005			2004			2003			2002			2001
Income from Continuing Operations Before Taxes	$	6,221.4		$	7,363.9		$	7,974.5		$	9,051.6		$	9,651.7		$	9,948.1
Add (Subtract):
One-third of rents		67.8			68.2			71.9			75.6			67.2			64.2
Interest expense, gross		375.1			385.5			293.7			350.9			390.6			463.7
Interest capitalized, net of amortization		29.4			(1.0	)		(21.3	)		(30.1	)		(36.9	)		(66.1	)
Equity (income) loss from affiliates, net of distributions		(362.5	)		(615.9	)		(421.2	)		79.2			(156.1	)		(113.7	)
Preferred stock dividends, net of tax		120.0			120.0			151.0			150.9			164.3			199.6
Earnings from Continuing Operations	$	6,451.2		$	7,320.7		$	8,048.6		$	9,678.1		$	10,080.8		$	10,495.8
One-third of rents	$	67.8		$	68.2		$	71.9		$	75.6		$	67.2		$	64.2
Interest expense, gross		375.1			385.5			293.7			350.9			390.6			463.7
Preferred stock dividends		166.0			166.7			207.1			215.6			234.7			285.1
Fixed Charges from Continuing Operations	$	608.9		$	620.4		$	572.7		$	642.1		$	692.5		$	813.0
Ratio of Earnings to Fixed Charges from Continuing Operations		11			12			14			15			15			13

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.