In 1849, Charles Pfizer & Company opened as a fine-chemicals business. Now, as a research-based, global pharmaceutical company, Pfizer is the world's largest company devoted to healthcare, with products available in more than 150 countries. In June 2000, Pfizer completed the acquisition of Warner-Lambert, creating the world's most valuable and fastest-growing pharmaceutical company, and, in April 2003, merged with Pharmacia Corporation, enlarging Pfizer's portfolio of consumer healthcare brands and expanding its animal health business.
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17.46 %