This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.
Severe· well-documented
Avoid this combination unless your prescriber explicitly approves it with appropriate monitoring.
Dong quai may significantly enhance anticoagulant effects of warfarin. Cases of markedly elevated INR have been documented.
Coumarins in dong quai have inherent anticoagulant activity, and the herb may also inhibit platelet aggregation.
Source: Clinical Studies · Reviewed April 2026
Dong Quai + Warfarin (Coumadin): high risk. Avoid this combination unless your prescriber explicitly approves it with appropriate monitoring. Dong quai may significantly enhance anticoagulant effects of warfarin. Cases of markedly elevated INR have been documented.
Coumarins in dong quai have inherent anticoagulant activity, and the herb may also inhibit platelet aggregation.
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.