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Antihistamiine
Antihistamine
Brand | Generic | Action | Uses |
---|---|---|---|
Phenergan | promethazine | Acts on blood vessels, GI, respiratory system by competing with histamine for h1receptor site; decreases allergic response by blocking histamine. | Motion sickness, rhinitis |
Zyrtec | cetirizine | Acts on blood vessels, GI, respiratory system by competing with histamine for H1receptor site; decreases allergic response by blocking pharmacologic effects of histamine; minimal anticholinergic/sedative action | allergic rhinitis, hives |
Clarinex | desloratadine | Binds to peripheral histamine receptors, providing antihistamine action without sedation; decreased nasal stuffiness, itching, swollen eyes | seasonal allergic rhinitis |
Dramamine | meclizine | acts centrally by blocking chemoreceptor trigger zone, which in turn acts on vomiting center | Vertigo, motion sickness |