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Warner–Lambert was an American pharmaceutical company. It traced it roots to drug store founded in 1856 in Philadelphia by William R. Warner. Inventing a tablet-coating process gained Warner a place in the Smithsonian Institution. The second half of the name came from the Lambert Pharmacal Company, the makers of Listerine. The two companies merged in 1955 to form Warner–Lambert.
Over the years, the company expanded through many mergers and acquisitions to become an international competitor in several businesses. In 1976, Warner–Lambert took over Parke-Davis, which was founded in Detroit in 1866, by Hervey Parke and George Davis. This was followed by acquisitions of Wilkinson Sword in 1993 and Agouron in 1999.
In the late 90's, Warner-Lambert formed an alliance with Pfizer to bring its drug, Lipitor, to market. Lipitor launched in January 1997 to resounding success, reaching $1B in domestic sales within its first 12 months on the market.