Powerful Circulation Support in a Capsule With 2,000FU of nattokinase per capsule, Nutricost Nattokinase promotes healthy blood flow and circulation. The 120 gluten-free, vegetarian capsules are conveniently packaged in a bottle for on-the-go use. Third party tested and made in the USA, Nutricost Nattokinase is a quality circulation supplement you can trust.