Herbal Remedies

Many medicines, including herbal remedies, affect warfarin control. The following are some examples but this is not a comprehensive list. Be aware of potential interactions especially in products where the details of the content are uncertain.

Complementary Medicines which may Increase the Anticoagulant Effect

Danshen Dong Quai
Ginger Horse chestnut
Papain/Papaya extract Vitamin E >400iu/day


Complementary Medicines which may Decrease the Anticoagulant Effect


Coenzyme Q10 Ginseng
Green Tea St John’s Wort


Complementary Medicines which affect Platelet Function


Ginkgo biloba



This is not an exhaustive list. To check for an interaction or what action to take contact your pharmacist.