New research revealed at the recent Annual Meeting of the American College of Emergency Physicians shows that intravenous cetirizine is noninferior to IV diphenhydramine in the treatment of acute urticaria, with a better safety profile. The researchers randomized 262 adult patients with acute urticaria who presented to 1 of 19 EDs or urgent care centers from March 2017 to April 2018 to receive either 50 mg IV diphenhydramine or 10 mg IV cetirizine. Primary endpoint …
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