As the drug schedule changes-- Schedule II, Schedule III, etc., so does the abuse Xanax, Soma, Darvon, Darvocet, Valium, Ativan, Talwin, Ambien, medicalcases.eug: suboxone. Schedule IV drugs are also available by prescription in the U.S. because they may be recommended for certain medical uses. They include Xanax, Soma. Aug 2, - The FDA started listing drugs by classification, or drug schedules, in per dosage unit (Tylenol with Codeine), and buprenorphine (Suboxone). lorazepam (Ativan), midazolam (Versed), temazepam (Restoril), and.