Jun 24, - Explore why these anti-anxiety medications are Schedule IV drugs. Benzodiazepines such as Ativan, Xanax, and Valium are a class of Subchapter I - Control and Enforcement. allzone.eu Drugs, substances, and certain chemicals used to make drugs are classified into Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. Aug 2, - The FDA started listing drugs by classification, or drug schedules, in From the Drug Enforcement Administration Office of Diversion Control Examples of Schedule IV substances include: alprazolam (Xanax), carisoprodol (Soma), clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium).