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A member asked:

What are the side effects of diphenhydramine?

A doctor has provided 1 answer
Dr. Lee Perry answered

Several: The most common side effect of taking too much Benadryl (diphenhydramine) would be excessive drowsiness. Other possible side effects include dizziness, headache, constipation, urinary retention, and heart palpitations.

Dr Fronzaglia ii, do, ms agreed

Answered 6/24/2014

5.8k views

Thank

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