Coumadin - anticoagulant of indirect action. It is taken for treatment and prevention of a deep vein thrombosis and embolism of a pulmonary artery, the transitory ischaemic attacks and an ischemic stroke, secondary prevention of myocardial infarction and prevention of tromboembolic episodes after a myocardial infarction, prevention of tromboembolic episodes at patients with fibrillation of auricles, cardiac valve damage or with the fitted prosthesis heart valves.