Definition of Controlled Substance Schedules. Lists of Scheduling Scheduling Actions, Controlled Substances, List I and II Regulated Chemicals. Alphabetical ?Marijuana · ?21 CFR Part · ?21 CFR · ?Exempt Anabolic Steroid. One substance may be Schedule I, while another is Schedule II, III, or IV. In this way, scheduling narcotics, prescription medications, and other drugs makes V substances involve preparing the drug with a small quantity of some narcotic. Aug 2, - Other Schedule II narcotics include: morphine, opium, and codeine. clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium).