Naka Nattokinase - Bonus Size - A unique whole natto concentrate from fermented non-GMO soy beans in a highly stable form ensuring optimal activity. Supports circulatory health and already healthy levels of blood clotting factors within a normal range. Nattokinase is an all-natural enzyme with a potent ability to break down the proteins that occur in clots and dissolve fibrin clots (blood clots), improve blood circulation, and relieve nasal inflammation. Naka Nattokinase is in delayed release capsules to protect the ingredients from stomach acid and maintain full potency.