Drug Information & Types such as Stimulants, Depressants, Club Drugs, Alprazolam (Xanax) Diazepam (Valium) Methadone Lorazepam (Ativan) You may hear of drugs being referred to as classified as Schedule 4 for example. A Listing of drugs and their schedule are located at Controlled Substance Act Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. Aug 2, - The FDA started listing drugs by classification, or drug schedules, in Examples of Schedule IV substances include: alprazolam (Xanax).