Anti-histamines

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An anti-histamine (commonly called a histamine antagonist) is a pharmaceutical drug that inhibits the action of histamine by either blocking its attachment to histamine receptors or inhibiting the enzymatic activity of histidine decarboxylase which catalyzes the transformation of histidine into histamine. Anti-histamines are used for the relief of allergies as well as for their psychoactive effects.

Pharmacology

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Anti-histamines have inverse agonistic effects upon histamine receptors.

Examples

Anti-histamines are seen throughout organic chemistry including psychoactive and anti-allergenic compounds.

• DPH
• Dimenhydrinate
• Mirtazapine
• Cyclizine
• Doxylamine
• Meclozine
• Quetiapine

See also

• Responsible use
• Deliriants
• Tropane alkaloids
• Histamine
• DPH
• Mirtazapine