High Potency, 2,000 FU's of Activity, A Dietary Supplement, Vegetarian Formula. 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 2000 FU (Fibrinolytic Units) to help keep already healthy levels of blood clotting factors within a normal range.* Suggested Usage As a dietary supplement, take 1 Vcap® 1 to 2 times daily on an empty stomach. Consider taking this product in combination with NOW® Pycnogenol®, Advanced Gamma-E and Fish or Flax Oil. Supplement Facts Serving Size : 1 Vcap® Servings Per Container : 60 Amount Per Serving % Daily Value* Nattokinase (enzyme from Natto Extract) (providing 2,000 FU's of enzyme activity - an assay equivalent to 160 IU Urokinase assay) (non-gmo soy derived) 100 mg * * Percent Daily Values are based on 2,000 calorie diet. † Daily Value not established.