Aug 11, - And opioid painkillers, as one example, are schedule 2 but legal for medical purposes. Schedule 4: Xanax, Soma, Darvocet, Valium, and Ambien The DEA says schedule 2 substances have some medical value and. Aug 2, - The FDA started listing drugs by classification, or drug schedules, in Other Schedule II narcotics include: morphine, opium, and codeine. (Soma), clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium). Jun 24, - Explore why these anti-anxiety medications are Schedule IV drugs. Benzodiazepines such as Ativan, Xanax, and Valium are a class of Schedule I drugs are seen as the most serious and Schedules II through V include.