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Family Physician
Family Physician, Doctor (MD)
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Experience:  Emergency Medicine and Family Practice for over 26 years
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Can benadryl (antihistamines) cause high or elevated blood pressure

Customer Question

Can regular use of benadryl cause elevated or high blood pressure?
Submitted: 6 years ago.
Category: Health
Expert:  Christy Hammond replied 6 years ago.
Benadryl can contribute to high blood pressure. While the doctor may have independant reasons for evaluating the causes for your high blood pressure it could nit hurt to discontinue the benadryl to check the effect on your pressure.
Expert:  Family Physician replied 6 years ago.
There are a number of over-the-counter antihistamines that may not cause as many side effects as Benadryl such as Claritin/Alavert or Zyrtec.

Most patients do not get significant elevation of their blood pressure with Benadryl, but particularly at higher doses this is possible. I would suggest discussing other antihistamines with your doctor. The other option would be a trial of one of the steroid nasal sprays - which have actually been shown to be more effective than the antihistamine for many allergy symptoms.
Family Physician, Doctor (MD)
Category: Health
Satisfied Customers: 12619
Experience: Emergency Medicine and Family Practice for over 26 years
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