NSK-SD – Cardiovascular & Circulatory SupportNSK SD Cardiovascular and Circulatory Support Promotes Healthy Blood Flow and Clotting Balance Product Overview NSK SD is a clinically studied fibrinolytic enzyme derived from traditional Japanese natto. This natural enzyme supports the bodys ability to maintain healthy blood viscosity and normal clotting activity, promoting optimal cardiovascular function. By assisting the bodys natural fibrin clearing processes, NSK SD helps sustain smooth blood