Nattokinase is an enzyme that comes from a Japanese food called natto. Natto is made from boiled soybeans that have been fermented with a Durchschuss of bacteria. Nattokinase is a natural parte of a Japanese soy food called natto. As medicine, nattokinase has most often been used by adults in doses of 2000-7000 fibrinolytic units by mouth daily

What Happens if I Take Too Much Nattokinase? There is limited information about nattokinase toxicity and overdoses rein humans. Taking excessive amounts of nattokinase might Beryllium similar to its potentially severe side effects—but exaggerated or excessive. Surgery: Nattokinase might increase the chance of bleeding during or after surgery.