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Psychoactive drugs

Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson

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Psychoactive drugs

Any drug that affects the mind or behavior. There are five main classes of psychoactive drugs: opiates and opioids (e.g. heroin and methadone); stimulants (e.g. cocaine, nicotine), depressants (e.g. tranquilizers, antipsychotics, alcohol), hallucinogens (e.g. LSD), and marijuana and hashish.

Mentioned in: Methadone

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