King Pharmaceuticals was the world's 39th largest pharmaceutical company, based in Bristol, Tennessee. However, on October 12, 2010, King was acquired by Pfizer for $14.25 per share. King produced a wide range of pharmaceuticals, including Altace for heart attack prevention, Levoxyl for hypothyroidism, Sonata, a sleeping aid, and Skelaxin, a muscle relaxant. King Pharmaceuticals operated manufacturing facilities in Bristol, Tennessee, Rochester, Michigan, St. Louis, Missouri, St. Petersburg, Florida, and Middleton, Wisconsin, and they employed approximately 2,700 people including a sales force of over 1,000 individuals.

 

King's wholly owned subsidiaries were Monarch Pharmaceuticals, Inc., King Pharmaceutical Research and Development, Inc., Meridian Medical Technologies Inc., Parkdale Pharmaceuticals, Inc., King Pharmaceuticals of Nevada, Inc., and Monarch Pharmaceuticals Ireland Limited.