Fine Japan Nattokinaze— Nattokinase with black vinegar Moromi extract from Okinawa, 30-day supplyNattokinase is one of many enzymes derived from a product called natto (fermented soybeans), traditionally consumed in Japan. Researchers have found that Natto can dissolve fibrin threads, and blood fluidity determines the health of the entire body. With high blood viscosity, substance transport is disrupted, contributing to a greater likelihood of blood clots. High blood viscosity contributes to myocardial infarction, stroke and other heart diseases.