Diphenhydramine
from Paramedic Drug Cards Hosted by Michael Egan
Trade – Benadryl Class – Antihistamine MOA – Antagonizes h1 histamine receptors Indication – Anaphylactic reaction Contraindication – Acute asthma as Benadryl thickens secretions. Side effects – Drowsiness, Dizziness, headache, excitable state, wheezing, thickening bronchial secretions, chest tightness, palpitations, hypotension, blurred vision, dry mouth, N/V, Diarrhea. Dosing Adult 25-50mg IV/IO/IM Pedi 2-12 years – 1-1.25 mg/kg IV/IO/IM
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