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Can medications interfere with the metabolism of warfarin for A fib?

Douglas E. Severance, MD
Family Medicine
Medications, even over-the-counter remedies, can interfere with metabolism of warfarin, a blood thinner, for atrial fibrillation. Specifically, antibiotics will interfere with the metabolism of warfarin, causing the blood thinner to be less effective. If you are taking antibiotics, you may need to adjust the warfarin dosage. Talk to your doctor before taking any medication and tell the doctor about any medications you are taking.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.