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Severe· well-documented
Avoid this combination unless your prescriber explicitly approves it with appropriate monitoring.
Ginseng may decrease the effectiveness of warfarin, leading to reduced INR values and increased clotting risk.
Ginsenosides may have antiplatelet effects but also induce CYP enzymes that metabolize warfarin, leading to unpredictable INR changes.
Source: Clinical Studies · Reviewed April 2026
Ginseng + Warfarin (Coumadin): high risk. Avoid this combination unless your prescriber explicitly approves it with appropriate monitoring. Ginseng may decrease the effectiveness of warfarin, leading to reduced INR values and increased clotting risk.
Ginsenosides may have antiplatelet effects but also induce CYP enzymes that metabolize warfarin, leading to unpredictable INR changes.
Do not stop either abruptly on your own. Talk to your prescriber or pharmacist promptly — bring this page to your appointment.
Educational information only — not medical advice. Always verify with a healthcare professional.