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a category of drugs that have a small potential for abuse or addiction. Among the substances so classified by the Drug Enforcement Agency are many commonly prescribed medications that contain small amounts of codeine or diphenoxylate. The specific drugs in Schedule V vary greatly from state to state.
controlled drug substanceAny drug or therapeutic agent–commonly understood to include narcotics, with a potential for abuse or addiction, which is held under strict governmental control, as delineated by the Comprehensive Drug Abuse Prevention & Control Act passed in 1970
Controlled drug substances
Schedule I drugs High abuse potential, no accepted medical use in US–Acetorphine, acetyl methadol, allyprodine, α—acetylmethadol, bufotenine, dextromoramide, diethyltryptamine, dimethyltryptamine–DMT, etorphine, heroin, ibogaine, ketobemidone, LSD–N,N-diethyl-D-lysergamide or lysergic acid diethylamide, marijuana, mescaline, PCP–phencyclidine, peyote, phenadoxone, phenampromide, racomoramide, tetrahydrocannibol
Schedule II High abuse potential, potentially leading to severe psychologic or physical dependence; schedule II agents have acceptable medical uses, eg narcotics–alphaprodine, anileridine, cocaine, codeine, diphenoxylate, diprenorphine, etorphine HCl, ethymorphine, hydrocordone, hydromorphone, levorphanol, meperidine, methadone, morphine, oxymorphone, poppy straw concentrates, powdered opium, raw opium, thebaine and non-narcotics–amphetamine, amobarbital, methaqualone, methamphetamine, methaqualone, pentobarbital, percodan, phencyclidine, phenmetrazine, secobarbital
Schedule III High abuse potential, moderate to low physical dependence, and high psychologic dependence potential, with acceptable medical uses, which may be narcotic–eg nalorphine, paregoric, or nonnarcotic–eg aprobarbital, benzphentamine, butabarbital, chlorphentermine, chlortermine, glutethimide, mazindol, methyprylon, phendimetrazine, probarbital, talbutal, thiamylal, thiopental, vinbarbital
Schedule IV Minimal abuse potential, limited physical or psychological dependence potential, nonnarcotic, eg barbital, chloral hydrate, chlordiazepoxide, clonazepam, chlorazepate, dextropropoxyphene, diazepam, diethylpropion, ethchlorvynol, ethinamate, fenfluramine, lorazepam, mebutamate, methobarbital, meprobamate, methohexital, oxazepam, paraldehyde, phenobarbital, phentermine, prazepam
Schedule V Very low abuse/dependence potential–eg brown mixture–opium, some codeine preparations, diphenozylate preparations–Lomotil, ethylmorphine-Cidicol, opium–Donnagel-PG, terpin hydrate, or non-narcotic, eg loperamide