diphenhydramine HCl


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diphenhydramine HCl

n brand names: Benadryl, Sominex Formula 3;
drug class: antihistamine, H1 receptor antagonist;
action: acts on blood vessels and gastrointestinal and respiratory systems by competing with histamine for H1-receptor sites; decreases allergic response by blocking histamine;
uses: allergy symptoms, rhinitis, motion sickness, antiparkinsonism, nighttime sedation, infant colic, nonproductive cough.