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Medical Definition of Histamine antagonists
1. Drugs that bind to but do not activate histamine receptors, thereby blocking the actions of histamine or histamine agonist. Classical antihistaminics block the histamine h1 receptors only. (12 Dec 1998)
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1. Drugs that bind to but do not activate histamine receptors, thereby blocking the actions of histamine or histamine agonist. Classical antihistaminics block the histamine h1 receptors only. (12 Dec 1998)