Clonazolam (also known as Clonitrazolam and 6-(2-chlorophenyl)-1-methyl-8-nitro-4H-s-triazolo- (4,3-a)-(1,4)-benzodiazepine) is a medium-duration psychoactive drug of the benzodiazepine class which produces anxiolytic, sedative, hypnotic, muscle relaxant, anticonvulsant, and amnesic effects. Clonazolam, like other benzodiazepines, binds to specific sites on the GABA receptor. Clonazolam is a novel derivative of the FDA-approved drugs clonazepam (Klonopin, Rivitrol) and alprazolam (Xanax).
Clonazolam has a fast onset of action and symptomatic relief. Subjective reports suggest the onset to be between 20 – 60 minutes.