Aug 28, - The U.S. Drug Enforcement Administration has published a Final Rule of Schedule IV drugs are: Xanax, Soma, Darvon, Darvocet, Valium. A Listing of drugs and their schedule are located at Controlled Substance Act Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. Aug 11, - To initiate a schedule, the DEA first asks if a drug can be abused. If the answer is Schedule 4: Xanax, Soma, Darvocet, Valium, and Ambien.