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A 35-year-old member asked:

Which is the most effective antihistamine: diphenhydramine hcl or loratadine?

1 doctor answer3 doctors weighed in
Dr. John Chiu
Allergy and Immunology 59 years experience
Diphendydramine: Diphenhydramine would likely work better but make make you drowsy.
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Last updated Mar 31, 2015


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