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A member asked:
Can allegra work the same as benadryl (diphenhydramine)?
A doctor has provided 1 answer
Antihistamines: Both are antihistamines. Benadryl (diphenhydramine) works for a maximum of 6 hours, Allegra works for 24. Allegra is non drowsy but Benadryl (diphenhydramine) is very sedating.
Answered 5/24/2017
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