Nattokinase 20,000 FU (Nattokinase 20,000 FU)

It refers to a dietary supplement containing nattokinase, an enzyme derived from the traditional Japanese food natto, which is made from fermented soybeans. FU stands for "Fibrinolytic Units," which is a measurement unit used to quantify the activity of enzymes like nattokinase. It measures the enzyme's ability to break down fibrin, a protein involved in blood clotting.