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A member asked:

Hi, i have allergic rhinitis and asthma, since my allergies are very strong i drink allegra daily can i take benadryl (diphenhydramine) at night?

A doctor has provided 1 answer
Dr. Colette Wiseman answered

Specializes in Internal Medicine

Yes: one dose of benadryl (diphenhydramine) at night (25mg) is safe. However use it only when absolutely necessary. Antihistamine overdose can make you dehydrated, have a fast heart rate and feel anxious.

Answered 8/7/2016

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Related Questions

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I'm having a reaction to my allergy shots and my arms are really swollen. I took Allegra at about 6:40 this morning, can I take Benadryl (diphenhydramine)?

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I have true allergy to Benadryl (diphenhydramine) (had hives when taking the dye-free for a headache.) is allegra safe for me? And would it help my allergic reactions?

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If allergic to 1 antihistamine, am i allergc to all? Have seen a few hives after benadryl, (diphenhydramine) xyzal, & now allegra. Coincidence or true allergy?

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