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• A chemical entity that binds to a receptor and blocks its activation. Antagonists prevent the natural (or abused) substance from activating its receptor.

  National Institute on Drug Abuse - Cite This Source - This Definition
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  Cite Definition for antagonist

  American Psychological Association (APA)

  antagonist. (n.d.). NIH Prescription Drug Abuse Glossary. Retrieved February 9, 2023, from website: http://www.expertglossary.com/definition/antagonist.

  Chicago Manual of Style (CMS)

  antagonist. www.drugabuse.gov. NIH Prescription Drug Abuse Glossary. National Institute on Drug Abuse. http://www.expertglossary.com/definition/antagonist (accessed: February 9, 2023).

  Modern Language Association (MLA)

  "antagonist." NIH Prescription Drug Abuse Glossary. National Institute on Drug Abuse. 9 February. 2023 http://www.expertglossary.com/definition/antagonist.

• Browse Related Terms: Active Ingredient, agonist, antagonist, Biological Product, Buprenorphine, Detoxification, Drug, methadone, Opioid, Therapeutic Biological Product

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