Bayer HealthCare Pharmaceuticals today announced that XARELTO(R) (rivaroxaban), a novel anti-clotting therapy, achieved improvement in net clinical benefit in a study looking at treatment of patients with deep vein thrombosis (DVT). DVT is the formation of a blood clot in a deep vein, usually in the legs, that partially or totally blocks the flow of blood. It is estimated that DVT affects 45,000 Canadians per year(1).