Nattokinase is a proteolytic enzyme whose principle effect is fibrinolysis or degradation of fibrin, a fibrillar protein that when linked together forms the mesh essential for blood clot formation. Nattokinase also upregulates the body’s natural mechanism that guards against excess fibrin formation. Nattokinase may support healthy blood clotting, circulation, and platelet function by helping to maintain optimum function of the body’s normal fibrinolytic processes. Produced from fermentation of non-GMO soybean isolates by Bacillus subtilis natto. Standardized to fibrin activity units and free of vitamin K.