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
Thank
Get help from a real doctor now
Dr. Keegan Duchicela
Board Certified,
10 years in practice
16M people helped
Continue
108,000 doctors available
Read more answers from doctors