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Medicines rifaximinQuestion & answer

rifaximin · Medicine question

Can rifaximin turn urine red?

iatroX medicinesPublished 21 August 2026Reviewed 21 August 2026

The answer

Answer

Yes. Rifamycin medicines can cause reddish urine even though rifaximin is absorbed only minimally; this is usually harmless.

Sources for this answer

Rifaximin 550 mg film-coated tabletsemc · SmPC Current selected SmPC · Version 9

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The full medicine guide

rifaximin

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