MSD Manual

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Some Examples of Controlled Substances*

Some Examples of Controlled Substances*

Schedule

Examples

I†

Cathinone (khat) and methcathinone Cathinones Cathinone is an amphetamine-like stimulant derived from the plant Catha edulis (khat). The khat plant is a shrub grown in East Africa and on the Arabian peninsula. For centuries, people there... read more , GHB Gamma Hydroxybutyrate (GHB) Gamma hydroxybutyrate (GHB or "G") is taken by mouth, usually in liquid form. It is similar to ketamine or alcohol in its effects. (See also Drug Use and Abuse.) GHB produces feelings of relaxation... read more , heroin (and some other opioids) Opioids Opioids are a class of drugs derived from the opium poppy (including synthetic variations) that are pain relievers with a high potential for misuse. Opioids are used to relieve pain, but they... read more , LSD Hallucinogens Hallucinogens are a class of drugs that cause profound distortions in people's perceptions. Hallucinogens distort and intensify sensations, but the actual effects are variable and highly unpredictable... read more , marijuana Marijuana Marijuana (cannabis) is a drug made from the plants Cannabis sativa and Cannabis indica that contain a psychoactive chemical called delta-9-tetrahydrocannabinol (THC). Marijuana produces a dreamy... read more , MDMA Methylenedioxymethamphetamine (MDMA) MDMA (3,4-methylenedioxymethamphetamine) is a drug similar to an amphetamine but has both stimulant and hallucinogenic effects. (See also Amphetamines and Overview of Substance-Related Disorders... read more , psilocybin Hallucinogens Hallucinogens are a class of drugs that cause profound distortions in people's perceptions. Hallucinogens distort and intensify sensations, but the actual effects are variable and highly unpredictable... read more , synthetic cannabinoids Cannabinoids, Synthetic Cannabis is a term for marijuana. Tetrahydrocannabinol (THC) is the main active ingredient in marijuana. Synthetic cannabinoids are man-made drugs that are similar to THC. They are usually sprayed... read more

II

III

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.