warfarin

warfarin An anticoagulant medication (brand names: Coumarin, Panwarfin, Sofarin) that is taken to treat blood clots or overly thickened blood. Some patients also take warfarin to reduce their risk of clots, stroke, or heart attack. Warfarin works by suppressing production of some clotting factors. Warfarin can have potentially dangerous interactions with many other drugs, including some vitamins. Warfarin taken by a woman during pregnancy can disturb the development of an embryo and a fetus and lead to birth defects. See also deep vein thrombosis.