High Quality Content by WIKIPEDIA articles! Loprazolam (Triazulenone) marketed under the brand names Dormonoct, Havlane, Sonin, Somnovit, is a drug which is an imidazole benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. It is available in 1 mg and 2 mg tablets. It is licensed and marketed for the short term treatment of moderately severe insomnia.