Exhibit 12

PFIZER INC AND SUBSIDIARY COMPANIES
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Year Ended December 31,
(in million, except ratios)		2005		2004		2003		2002		2001
Determination of Earnings:
Income from continuing operations before provision for
taxes on income, minority interests and cumulative
effect of a change in accounting principles	$	11,534	$	14,007	$	3,246	$	11,766	$	9,963
Less:
Minority interests		16		10		3		6		14
Income adjusted for minority interests		11,518		13,997		3,243		11,760		9,949
Add:
Fixed charges		635		595		491		365		359
Total earnings as defined	$	12,153	$	14,592	$	3,734	$	12,125	$	10,308
Fixed charges:
Interest expense (a)	$	471	$	347	$	270	$	251	$	266
Preferred stock dividends (b)		14		12		10		--		--
Rents (c)		150		236		211		114		93
Fixed charges		635		595		491		365		359
Capitalized interest		17		12		20		28		56
Total fixed charges	$	652	$	607	$	511	$	393	$	415
Ratio of earnings to fixed charges		18.6		24.0		7.3		30.9		24.8

All financial information reflects the following as discontinued operations for 2005, 2004 and 2003: certain European generics businesses and for 2004 and 2003 our in-vitro allergy and autoimmune diagnostics testing, and surgical ophthalmics as well as, for 2004, 2003, 2002 and 2001 certain non-core consumer healthcare product lines (primarily marketed in Europe).

All financial information reflects the following as discontinued operations for 2003, 2002, and 2001: our confectionery, shaving and fish-care products businesses, as well as the Estrostep, Loestrin and femhrt women's health product lines for all the years presented.

(a)	Interest expense includes amortization of debt premium, discount and expenses.
(b)	Preferred stock dividends are from our Series A convertible perpetual preferred stock held by an Employee Stock Ownership Plan assumed in connection with our acquisition of Pharmacia.
(c)	Rents included in the computation consist of one-third of rental expense which we believe to be a conservative estimate of an interest factor in our leases, which are not material.