5 Scheduled Drug Categories Defined include Fenfluramine, Lorcaserin, Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, and Tramadol. Diazepam, first marketed as Valium, is a medicine of the benzodiazepine family that typically .. diazepam for the palliative treatment of certain types of epilepsy and spastic International: diazepam is a Schedule IV controlled drug under the Elimination half-life?: ?20– hours (36– ho. Aug 2, - The FDA started listing drugs by classification, or drug schedules, clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium).