2 doctors weighed in:

How quickly does it take for bendryl to wear off?

2 doctors weighed in
Dr. Al Hegab
Internal Medicine - Allergy & Immunology
1 doctor agrees

In brief: Benadryl (diphenhydramine)

diphenhydramine has a half life of 4-10 hours, so probably 8-20 hours for it to be cleared from your system

In brief: Benadryl (diphenhydramine)

diphenhydramine has a half life of 4-10 hours, so probably 8-20 hours for it to be cleared from your system
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