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A member asked:

How long should an allergic reaction symptom to an antibiotic last for?

A doctor has provided 1 answer

Antibiotic allergy: Antibiotic allergies can clear up in a day or last up to six months. Fortunately, most resolve relatively quickly, over a few days. We do not yet know why some persist for a long time and require strong medications like oral steroids (e.g. Prednisone) in order to settle down.

Answered 7/1/2020

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