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Answers from the BJC Experts

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Would taking Benadryl raise your blood sugar if you have diabetes?

I cannot find any references that indicate any cause/relationship between diabetes and Benadryl (diphenhydramine) or any short-acting antihistamine. Unless you take bottles of the Benadryl Children’s syrup (which contains some alcohol), there should be no problem taking Benadryl. Any diabetic should keep in mind that the better control you have over the blood sugar and A1C levels, the better your outcomes will be. Please check your blood sugar regularly.

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