Nattokinase 2,000 FU's, 100 mg, 180 Vcaps, Healthy OriginsHealthy Origins Nattokinase 2,000 FU's, 100 mg 100% Natural. Soy Free, Non GMO. Supports Normal Circulatory Health. Suitable for Vegetarians. Dietary Supplement. Nattokinase is a fibrinolytic enzyme which is extracted from the popular Japanese food natto. Natto is a cheese like food that is produced by adding Bacillus natto to boiled non gmo soybeans. Healthy Origins Nattokinase is expected to be soy free since there are no residual amounts of soy