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Medicines co-trimoxazoleQuestion & answer

co-trimoxazole · Medicine question

Is co-trimoxazole a penicillin?

iatroX medicinesPublished 19 August 2026Reviewed 19 August 2026

The answer

Answer

No. It is a trimethoprim–sulfonamide combination, although serious allergic reactions can still occur.

Sources for this answer

Co-trimoxazole 16mg/80mg per ml solution for infusionemc · SmPC Current selected SmPC · Version 5

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The full medicine guide

co-trimoxazole

Read the wider context, including uses, precautions and the sources behind this medicine guide.

Read the co-trimoxazole guide

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