Main Page | See live article | Alphabetical index Hypnotic is either the state of hypnosis or a drug that induces sleep, used in the treatment of severe insomnia. Drugs used include barbiturates, benzodiazepines, cyclopyrrolone, chloral hydrate, chlormethiazole or the antihistamines promethazine and diphenhydramine. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.