Natto is a Japanese food staple. It is made by fermenting soy beans with a certain bacteria. They have been eating it for 1000 years, mostly for breakfast. Soy is the only vegetable which produces the K2 vitamin.
Nattokinase is a health supplement made from Natto. It has many health benefits. Here's how I know it's good. Big Pharma actually removes the K2 vitamin and sell it at the same price. Doctor's Choice is one of those brands.
If you buy it make sure you get the real stuff with the K2 vitamin which makes the whole thing work. Look it up. Mayo Clinic quotes studies on dogs where the dogs were induced to have thrombosis (bloods clots) in their legs. A heavy dose of nattokinase broke up and removed the clots within a couple days.
Nattokinase is a food