From the Manufacturer:
Promotes circulatory health**
2,000 FU's of activity
Nattokinase is an enzyme isolated from Natto, a traditional Japanese fermented soy food. Natto has been consumed safely for thousands of years for its numerous health benefits.** More recently, both clinical and non-clinical studies have demonstrated that Nattokinase supports heart health and promotes healthy circulation.** Each serving of Now® Nattokinase provides 2,000 FU (Fibrinolytic Units).
Nattokinase 100 mg
100 mg / 60 Vegi Caps / Item #024413