A member asked:

Does benadryl, (diphenhydramine) claritin, or zyrtec cause weight gain?

3 doctors weighed in across 2 answers

Benadryl (diphenhydramine): None of those cause weight gain but Benadryl (diphenhydramine) can cause drowsiness.

Answered 4/4/2021

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Probably not: Weigh gain would be an unusual side effect of antihistamines.

Answered 3/25/2013

5.2k views

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