I´ve been taking Warfarin for about 6 years now after being diagnosed with TVP (venose profound trombosis) and TEP (pulmonary trombosis). Side effects include: lethargy, difficulty concentrating, sudden extreme headaches, memory loss, oily face, red toes, hair loss, dry eyes, yellow hands, it completely changed my hair.. I had wonderful hair , shiny and straight, and now I have it curled up, dry, and broken. The worse thing is that I have to take warfarin for my entire life.