Nattokinase is an enzyme (protein) found in natto, a traditional Japanese dish made from fermented soybeans. Also sold as a dietary supplement to promote heart health, nattokinase side effects are generally mild, but it may increase the risk of bleeding. Verywell Health's content is for informational and educational purposes only. https://luz-medienagentur.de/seo-agentur-fur-professionelle-google-suchmaschinenoptimierung/