A 44-year-old member asked:
is ampicillin to take if allergic to erythromycin?
1 doctor answer • 3 doctors weighed in
Allergy and Immunology 13 years experience
No cross reaction: Ampicillin and other penicillin-type antibiotics have a completely different chemical structure than erythromycin. Thus, the risk for allergic reaction to Ampicillin is no different than your average person. Your doctor can tell you which antibiotic (ampicillin, cipro, (ciprofloxacin) etc.) will be most effective for a given infection (sinus infection vs skin infection, etc.). See your doctor for more info.
4860 viewsReviewed >2 years ago
Last updated Feb 19, 2017
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