A member asked:

I have two different antihistamines...one is hydroxyzine and the other is is diphenhydramine..which one will cause me to gain weight?

5 doctors weighed in across 2 answers

Hydroxyzine: Increase in weight and appetite are known side effects of hydroxyzine.

Answered 11/9/2020

5.4k views

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Neither: You will not gain weight if you do not overeat.

Answered 9/23/2016

5.4k views

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