Terminology and Information on Drugs

Third Edition

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The UNODC publication “Terminology and Information on Drugs” introduces basic concepts and materials on substances under international control, which are most frequently manufactured or processed and/or abused, as well as definitions of scientific terms used in this context. It seeks to collate basic concepts and information on drugs of abuse, their corresponding abuse patterns, pharmacological effects and potential medical use, and act as an accessible and user-friendly resource.



Central nervous system depressants

Central nervous system (CNS) depressants are primarily used as medicines that suppress, inhibit or decrease brain activity. The main classes of CNS depressants are sedatives, hypnotics, opioids and neuroleptics [18]. CNS depressants include benzodiazepines, barbiturates, methaqualone and GHB (gamma-hydroxybutyric acid).


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