It's said in 1087, natto has been discovered from rice straw and been dietary to date. After 900 years since 1087, the active ingredient is isolated by Japanese academic, which is well-known as Nattokinase.
Nattokinase is regarded as serine protease. It possesses the unique catalytic capability, which is able to eliminate blood clot by 4 pathways of physical mechanism to protect cardiovascular system by prevention of high blood pressure and relevant disease.Since long ago, Japanese regard natto as daily diet. The activity of a bowl of natto is equal to 2,000 FU/g (FU, Fibrinolytic Unit).