Unisom

Unisom is the Chattem brand name for an over-the-counter sleep-aid medication. While marketed under a single trademark, the active ingredient may be one of two drugs, depending on the type of preparation. Doxylamine succinate is sold in 25 mg dosages as tablets, and diphenhydramine hydrochloride is sold in a liquid/gelatin preparation in dosages of 50 mg.

History
On January 2, 2007 Chattem, Inc. acquired five over-the-counter name brands from Johnson & Johnson including Unisom. The Unisom brand was acquired by Johnson & Johnson in 2006 from Pfizer Consumer Healthcare.