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 ...
