<unk> , trade name Librium among others, is a sedative and hypnotic medication of the benzodiazepine class; it is used to treat anxiety, insomnia and symptoms of withdrawal from alcohol and other drugs.<unk>  has a medium to long half-life but its active metabolite has a very long half-life. The drug has amnesic, anticonvulsant, anxiolytic, hypnotic, sedative and skeletal muscle relaxant properties.<unk>  was patented in 1958 and approved for medical use in 1960. It was the first benzodiazepine to be synthesized and the discovery of<unk>  was by pure chance.<unk>  and other benzodiazepines were initially accepted with widespread public approval but were followed with widespread public disapproval and recommendations for more restrictive medical guidelines for its use.
Chlordiazepoxide
Clorazepate
Amobarbital
Phenobarbital
Heptobarbital
Ethyl loflazepate
Tianeptine
Methylphenobarbital