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A member asked:

How does benadryl (diphenhydramine) help reduce allergy symptoms?

5 doctors weighed in across 2 answers

Reduces histamine: It decreases the amount of chemicals, such as histamine( hence it is an antihistamine), an allergic person's body produces in response to allergens, which could be anything from pollen and pet dander to substances which cause skin rashes.

Dr Ferdowsi and another doctor agreed

Answered 12/5/2014

6.3k views

Thank
Show 1 more comment

Antihistamines: It blocks the histamine receptor.

Answered 11/7/2012

5.5k views

Thank

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