U.S. doctors online nowAsk doctors free
A 28-year-old male asked:

Will taking benadryl (diphenhydramine) everyday lead to more histamine receptors? does being benadryl (diphenhydramine) everyday cause an opposite reaction and cause more allergies?

1 doctor answer1 doctor weighed in
Dr. Al Hegab
Dr. Al Hegabanswered
Allergy and Immunology 41 years experience
No: Not the case, but you may develop tolerance to the drug, meaning you have to take more to get the same result
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jun 8, 2016


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.