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A member asked:
Does flagyl 500mg contain penicillin?
6 doctors weighed in across 3 answers
Nope: Penicillin and metronidazole (Flagyl®) are entirely different antibiotics. Neither one "contains" the other. If you may have had a penicillin allergy and now have been prescribed metronidazole, you need not worry. There is no increased risk of an allergic reaction.
Answered 11/28/2017
2.9k views
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No: Flagyl only contains metronidazole. Penicillin contains penicillin. The pharmacist does not mix the two together. They are unrelated.
Answered 5/2/2015
2.9k views
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