Support cardiovascular health with Nattokinase.ᶧ Nattokinase is an enzyme from natto, a unique food made of boiled soybeans fermented with Bacillus subtilis, and is a byproduct of the fermentation process. Nattokinase may help support healthy fibrinolytic activity, help support normal circulation, and help maintain normal blood pressure already within the normal range.ᶧ It may also help with healthy inflammatory response support.