King Pharmaceuticals ( ), the world's 39th largest pharmaceutical company, is based in Bristol, Tennessee. King produces a wide range of pharmaceuticals, including Altace for heart attack prevention, Levoxyl for hypothyroidism, Sonata, a sleeping aid, and Skelaxin, a muscle relaxant, as well as Glumetza manufactured by Depomed, for diabetes. King Pharmaceuticals currently operates manufacturing facilities in Bristol, Tennessee, Rochester, Michigan, St. Louis, Missouri, St. Petersburg, Florida, and Middleton, Wisconsin, and they employ approximately 2700 people including a sales force of over 1000 individuals.

King's wholly owned subsidiaries are 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.