Nattokinase is an enzyme derived from "natto," a traditional fermented soy food popular in Japan. During the natto production process, friendly Bacillus subtilis bacteria are boiled and fermented using non-GMO soybeans to produce nattokinase. Doctor's Best Nattokinase contains nattokinase enzyme with Vitamin K2 removed. Nattokinase has been shown to decrease plasma levels of fibronogen and supports a healthy circulatory system.
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