100% Natural • Soy Free. Non-GMO. Supports Normal Circulatory Health. Suitable For Vegetarians. 100 mg. Nattokinase is a fribrinolytic enzyme which is extracted from the popular Japanese food natto. Natto is a cheese-lie food that is produced by adding Bacillus natto to boiled non-gmo soybeans. . Healthy Origins® Nattokinase is guaranteed to be soy free since there are no residual amounts of soy remaining after the fermentation and purification process. . Nattokinase is to be used as part of your diet and exercise program to maintain normal circulatory healthy.