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A female asked:

I took 5mg of valium 6 hours ago... is it safe to take 30 ml of diphenhydramine now to fall asleep? or will the two interact?

2 doctor answers • 6 doctors weighed in

Dr. John Chiuanswered

Allergy and Immunology 58 years experience

Likely: ok but may add to the drowsiness which is apparently what you want.

3.2k viewsReviewed >2 years ago

Dr. Jeffrey Juchau

Dr. Jeffrey Juchau agrees1 doctor agrees

Dr. Al Hegabanswered

Allergy and Immunology 41 years experience

Will interact: taking both might increase CNS depression, better avoid, and exercise caution with multiple drugs, good luck

3.2k viewsReviewed >2 years ago

Dr. Susan Rhoads

Dr. Evan Altman

Dr. Patricia Foster

Dr. Susan Rhoads and 2 doctors agree3 doctors agree

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I've read that Benadryl (diphenhydramine) can both raise and lower blood pressure - which is correct? I take 50mg at night to help fall asleep.

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Last updated May 1, 2016

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