Diazepam, first marketed as Valium, is a medicine of the benzodiazepine family that acts as an anxiolytic. It is commonly used to treat a range of conditions, including anxiety, seizures, alcohol withdrawal syndrome, benzodiazepine withdrawal syndrome, muscle spasms, insomnia, and restless legs syndrome.
Molar mass284.7 g/mol
Elimination half-life(50 hours); 20–100 hours (36–200 hours for main active metabolite desmethyldiazepam)
Bioavailability76% (64–97%) by mouth, 81% (62–98%) rectal