Herbal products that have been associated with published case reports of possible interactions with warfarin include danshen, devil's claw, dong quai, green tea, ginseng, and papain. Dietary ...

The Annals of Pharmacotherapy. 2008;42(6):790-805.

More research is needed, however, and any real change could take years. The first-line blood thinner prescribed to valve patients is warfarin. Warfarin is generally effective, with patients having a 1 ...