Wikipedia
Schering-Plough Corporation was a United States-based pharmaceutical company. It was founded in 1851 by Ernst Christian Friedrich Schering as Schering AG in Germany. In 1971, the Schering Corporation merged with Plough (founded by Memphis area entrepreneur Abe Plough in 1908) to form Schering-Plough. On November 4, 2009 Merck & Co. merged with Schering-Plough with the new company taking the name of Merck & Co.
Schering-Plough manufactured several pharmaceutical drugs, the most well-known of which were the allergy drugs Claritin and Clarinex, an anti- cholesterol drug Vytorin, and a brain tumor drug Temodar. These are now available from Merck & Co.
Schering Plough also owned and operated the major foot care brand name Dr. Scholl's and the skin care line Coppertone. These also became a part of the new company.
, Schering-Plough had 1.4% market share in the U.S., placing it seventeenth in the top twenty pharmaceutical corporations by sales compiled by IMS Health.
Schering-Plough was a full member of the European Federation of Pharmaceutical Industries and Associations (EFPIA), a membership which is also maintained by the new Merck.