MAJOR — Use With Caution
FDA rivaroxaban label warns against concurrent use with strong CYP3A4 and P-gp inducers. Consider alternative anticoagulation.
Evidence level: STRONG
Rifampin can make Xarelto (rivaroxaban) much less effective, potentially leaving you unprotected against blood clots. This combination should be avoided.
Rifampin strongly induces CYP3A4 and P-gp, dramatically reducing rivaroxaban levels. FDA rivaroxaban label warns to avoid strong CYP3A4/P-gp inducers.
If you need rifampin, discuss switching to warfarin (which can be dose-adjusted with INR monitoring) for the duration of treatment.
Monitor closely. Many antibiotics amplify anticoagulant effects by disrupting gut flora that produce vitamin K. Rivaroxaban levels may spike during antibiotic courses. If on warfarin, request more frequent INR monitoring. Take each at their normal prescribed times.
Atrial fibrillation, prior VTE
Signs of blood clots: leg swelling, chest pain, shortness of breath, stroke symptoms
Switch to warfarin for monitorable anticoagulation during rifampin therapy. Discuss alternative TB regimens.
This medication combination requires careful medical oversight. Your doctor or anticoagulation clinic can adjust doses or select alternatives with fewer bleeding risks. Frequent INR monitoring is essential.
Rifampin can make Xarelto (rivaroxaban) much less effective, potentially leaving you unprotected against blood clots. This combination should be avoided.
Monitor closely. Many antibiotics amplify anticoagulant effects by disrupting gut flora that produce vitamin K. Rivaroxaban levels may spike during antibiotic courses. If on warfarin, request more frequent INR monitoring. Take each at their normal prescribed times.
Signs of blood clots: leg swelling, chest pain, shortness of breath, stroke symptoms
This medication combination requires careful medical oversight. Your doctor or anticoagulation clinic can adjust doses or select alternatives with fewer bleeding risks. Frequent INR monitoring is essential.
Switch to warfarin for monitorable anticoagulation during rifampin therapy. Discuss alternative TB regimens.
Or browse the full interaction database (121,000+ pairs).