Jul 27, - The government started schedules with the Controlled Substances Act of in reality, a narcotic, including the Ultram schedule IV classification. A Listing of drugs and their schedule are located at Controlled Substance Act (CSA) Schedule IV drugs, substances, or chemicals are defined as drugs with a low Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, Tramadol. This is the list of Schedule IV drugs as defined by the United States Controlled Substances Act. List of Schedule IV drugs (US) , Diazepam.