Aug 2, - Examples of Schedule IV substances include: alprazolam (Xanax), clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium). Schedule IV drugs, substances, or chemicals are defined as drugs with a low Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. Schedule III, IV, or V drugs include those containing smaller amounts of certain narcotic and non-narcotic drugs, anti-anxiety drugs, tranquilizers, sedatives.