Harvard Health Blog

Do you really have a penicillin allergy?

By: Kimberly Blumenthal, MD, MSc, Contributor Chances are, you or someone you know is one of the 10% of Americans with a documented penicillin allergy. But just because you were told you had a penicillin allergy, or had one in the past, does not mean you have one now. People with a penicillin allergy history have their allergy disproved with allergy testing more than 90% of the time. Penicillin: a primer …

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