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Moderate· moderate-evidence
May be possible under supervision — talk to your prescriber or pharmacist before combining.
Dong quai contains coumarin compounds and may prolong bleeding time, adding to aspirin's antiplatelet effect. Use caution, especially before surgery.
Coumarins and ferulic acid in dong quai inhibit platelet aggregation, compounding aspirin's COX-mediated effect.
Source: Natural Medicines Database · Reviewed September 2026
Dong Quai + Aspirin: use caution. May be possible under supervision — talk to your prescriber or pharmacist before combining. Dong quai contains coumarin compounds and may prolong bleeding time, adding to aspirin's antiplatelet effect. Use caution, especially before surgery.
Coumarins and ferulic acid in dong quai inhibit platelet aggregation, compounding aspirin's COX-mediated effect.
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.