A member asked:

I took 24h claritin about 4-5 hours& it did not help at all. (i'm 18) i'm exhausted, can't breathe & can't sleep. can i take a benadryl (diphenhydramine) tablet?

4 doctors weighed in across 2 answers
Dr. Katharine Cox answered

Specializes in Pediatric Emergency Medicine

Yes: They act in different ways. The Benadryl (diphenhydramine) may cause drowsiness. I hope you feel better.

Answered 5/17/2015

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Dr. Corey Clay answered

Specializes in Allergy and Immunology

Yes: Although Claritin is somewhat slower in onset of effect, antihistamine may not be the answer. Knowing more about why you can't breath (congestion? mucus? wheezing? etc) would increase efficacy of any advice. That said, Benadryl (diphenhydramine) is likely safe. Cetirizine is somewhat faster than Claritin, but longer effect compared with Benadryl (diphenhydramine). Consider Afrin for 2-3 days max (read warnings carefully) if congest

Answered 7/4/2018

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