A patient taking the blood thinner warfarin tells a nurse that he regularly takes herbal supplements along with his vitamins. The nurse cautions the patient about the possible negative interactions of warfarin with

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All three herbal supplements listed - Saint-John's-wort, Feverfew, and Echinacea - have the potential to interact negatively with warfarin. Saint-John's-wort can decrease the effectiveness of warfarin, while Feverfew and Echinacea can increase the risk of bleeding when taken with warfarin. It is important for patients taking warfarin to inform their healthcare providers of any supplements or medications they are taking to avoid any harmful interactions.

A Patient Taking the Blood Thinner Warfarin Tells a Nurse