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A 46-year-old female asked:

If diphenhydramine is a sleeping pill and an antihistamine, then why is it safe to take daily for allergy but not when insomnia is the issue?

1 doctor answer1 doctor weighed in
Dr. Lynne Weixel
Clinical Psychology 36 years experience
Good question.: As long as you don't exceed the dose or frequency on the label - they are equally risky/safe. Perhaps the concern more with insomnia than allergy is that sleep is a combo of physical and behavioral causes while allergy is considered all physical. So, some may think you should 1st try good sleep habits/hygiene before pills. Also they may fear dependence more w/ insomnia. Sharp thinking!

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Last updated Feb 20, 2014

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