Nattozime is a remarkable circulatory enzyme. Developed by the National Enzyme Company, Swanson Nattozimes is an all-natural enzyme supplement inspired by the popular Japanese health food natto. For centuries, natto has been treasured by the Japanese as a health-promoting food, especially for the heart and circulatory health. Nattozime is a natural enzyme supplement that has demonstrated the same activity found in natto, and it makes a valuable addition to any cardiovascular wellness program.