Patients Taking Warfarin (Coumadin,Jantoven)for Long-Term Anticoagulant Drug Therapy Need to Be

Patients taking warfarin (Coumadin,Jantoven) for long-term anticoagulant drug therapy need to be sure they do not eat too much of which kinds of foods?

A) leafy green vegetables
B) beef liver
C) soybeans, soy milk, and tofu
D) all of the above