Table: Some Examples of Controlled Substances* - Merck Manuals Consumer Version

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Some Examples of Controlled Substances*

Schedule	Examples
I†	Cathinone (khat) and methcathinone, GHB, heroin (and some other opioids), LSD, marijuana, MDMA, psilocybin, synthetic cannabinoids
II	Amphetamines, barbiturates (short-acting), cocaine, hydrocodone (including hydrocodone combination products), hydromorphone, methadone, methylphenidate, morphine and other strong opioid agonists, oxycodone, hydrocodone, phencyclidine
III	Anabolic steroids, barbiturates (intermediate-acting), buprenorphine, dihydrocodeine, dronabinol, ketamine, paregoric
IV	Barbiturates (long-acting), benzodiazepines, chloral hydrate, modafinil, meprobamate, pentazocine, propoxyphene, zolpidem
V	Cough suppressants containing small amounts of codeine, pregabalin
* The Drug Enforcement Administration maintains a complete alphabetical listing of controlled substances. † Cannot be prescribed. GHB = gamma hydroxybutyrate; LSD = lysergic acid diethylamide; MDMA = methylenedioxymethamphetamine.

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