Answer
A radiolabelled study suggested rifaximin is almost exclusively excreted in faeces (96.9% of the administered dose), with urinary recovery not exceeding 0.4%; faecal analysis showed intact rifaximin, indicating no degradation or metabolism during gastrointestinal passage.
Sources for this answer
- XIFAXANTA 200 mg Film-coated TabletsNorgine Limited · emc · SmPC §5.2 Pharmacokinetic properties · Version 11Document updated
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