Unisom
Encyclopedia
Unisom is the Chattem
Chattem
Chattem is a Chattanooga, Tennessee, producer and marketer of over-the-counter healthcare products, toiletries, dietary supplements, topical analgesics, and medicated skin care products...

 brand name for an over-the-counter
Over-the-counter drug
Over-the-counter drugs are medicines that may be sold directly to a consumer without a prescription from a healthcare professional, as compared to prescription drugs, which may be sold only to consumers possessing a valid prescription...

 sleep-aid medication. While marketed under a single trademark
Trademark
A trademark, trade mark, or trade-mark is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and to distinguish its products or...

, the active ingredient may be one of two drugs, depending on the type of preparation. Doxylamine
Doxylamine
Doxylamine is one of the many sedating antihistamines used by itself as a short-term sedative, and in combination with other drugs as a night-time cold and allergy relief drug...

 succinate is sold in 25 mg dosages as tablets, and diphenhydramine
Diphenhydramine
Diphenhydramine hydrochloride is a first-generation antihistamine possessing anticholinergic, antitussive, antiemetic, and sedative properties which is mainly used to treat allergies. Like most other first-generation antihistamines, the drug also has a powerful hypnotic effect, and for this reason...

 hydrochloride is sold as tablets, and also in liquid/gelatin preparation in dosages of 50 mg.

History

On January 2, 2007, Chattem, Inc.
Chattem
Chattem is a Chattanooga, Tennessee, producer and marketer of over-the-counter healthcare products, toiletries, dietary supplements, topical analgesics, and medicated skin care products...

, acquired five over-the-counter name brands from Johnson & Johnson
Johnson & Johnson
Johnson & Johnson is an American multinational pharmaceutical, medical devices and consumer packaged goods manufacturer founded in 1886. Its common stock is a component of the Dow Jones Industrial Average and the company is listed among the Fortune 500....

, including Unisom. The Unisom brand was acquired by Johnson & Johnson in 2006 from Pfizer
Pfizer
Pfizer, Inc. is an American multinational pharmaceutical corporation. The company is based in New York City, New York with its research headquarters in Groton, Connecticut, United States...

 Consumer Healthcare.

Warnings

The manufacturers warn to not use this medication if under twelve years of age or with any product containing diphenhydramine
Diphenhydramine
Diphenhydramine hydrochloride is a first-generation antihistamine possessing anticholinergic, antitussive, antiemetic, and sedative properties which is mainly used to treat allergies. Like most other first-generation antihistamines, the drug also has a powerful hypnotic effect, and for this reason...

.
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