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Tag: allergic reaction

Cetirizine Vs Diphenhydramine For the Treatment of Acute Urticaria in the ED

Background: Diphenhydramine, a first-generation antihistamine, is the most common pharmacologic agent used to treat acute allergic reactions. Despite being highly effective in treating acute allergic reactions, first-generation H1 antihistamines cross the blood-brain barrier and bind to H1 receptors, which can …

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Allergy and Immunology

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