Herbal Interactions with Warfarin/Coumadin®

Increased INR	Increased risk of Bleeding	Decreased INR
Angelica Root Anise Arnica Flower Asafoetida Borage Seed Oil Celery Chamomile Fenugreek Horse Chestnut Licorice Root Lovage Root Papain Parsley Passionflower Herb Quassia Red Clover Rue Sweet Clover Vitamin E (if dose >400IU/day)	Bogbean Bromelain Capsicum Clove Danshen Devil’s Claw Dong Quai Evening Primrose Oil Feverfew Garlic Ginger Ginkgo Meadowsweet Poplar Tumeric Willow Bark	Coenzyme Q10 Ginseng Green Tea (in large amt)

* Drugs in bold have had a documented report of potential interaction