Enzyme
Nattokinase
Nattokinase is an enzyme from natto, a Japanese fermented-soybean food.
Also listed as Natto extract, subtilisin NAT, Orokinase, NSK-SD
Activity and mass are different measures
EFSA assessed a specific extract standardized to 20,000–28,000 fibrin-degradation units per gram, at a proposed maximum of 100 mg daily. These specifications describe that preparation, not a universal dose for all products. 1