The average Warfarin cash price is about $11.50 for a supply of: Tablet 1 MG 30 pcs. Get our free Warfarin coupon and be eligible to receive a discount. You can reduce your Warfarin cost by up to 75% with our free Warfarin discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Warfarin is an anticoagulant (blood thinner). Warfarin reduces the formation of blood clots. Warfarin is used to prevent heart attacks, strokes, and blood clots in veins and arteries. Warfarin may also be used for purposes not listed in this medication guide.