3 doctors weighed in:

Can allegra work the same as benadryl (diphenhydramine)?

3 doctors weighed in
Dr. Nayla Mumneh
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: 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.

In brief: 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.
Dr. Nayla Mumneh
Dr. Nayla Mumneh
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