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A member asked:
Why does benadryl (diphenhydramine) lower my blood pressure?
A doctor has provided 1 answer
It's sedating: Benadryl (diphenhydramine) is a sedating anti-histamine. It can make us a drowsy and therefore more relaxed. For allergies or nasal congestion and you want something less sedating, zyrtec, Claritin or Allegra are available over-the-counter.
Answered 10/4/2017
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