NattoZyme Nattokinase 100 mg, Value Size, 180 Softgels from NutriCologyNattoZyme Nattokinase Isolated, purified and encapsulated nattokinase, an enzyme derived from boiled soybeans and Bacillus subtilis natto. Research has shown nattokinase to support healthy coagulation of blood within normal levels and enhance fibrinolytic activity. Nattokinase NSK SD We tested recently introduced products and few meet the standards of Dr. Sumi, the discoverer of nattokinase, and Dr. Holsworth, the leading U. S. researcher of