Warfarin is a medication used to prevent blood clots and strokes. It is sold under various brand names, but its generic name is warfarin. If you are looking for synonyms for warfarin, you might try phrases that describe its function, such as blood thinner or anticoagulant. Other names for warfarin may include Coumadin, Jantoven, Panwarfin, and Marevan. These medications are all used to thin the blood and prevent dangerous blood clots from forming. It is essential to take warfarin and its alternatives as prescribed by your doctor and to tell them about any other medications you are taking.