Nattokinase is a potent fibrinolytic (anti-clotting) enzyme complex extracted and highly purified from a traditional Japanese food called Natto. Natto is a fermented cheese-like food that has been used in Japanese culture for more than 1000 years for its popular taste, and as a folk remedy for heart and vascular diseases. Research has shown that Nattokinase supports the body in breaking up and dissolving the unhealthy coagulation of blood .