Nattokinase is a naturally occurring enzyme derived from natto — a traditional Japanese food made from fermented soybeans that has been a dietary staple in Japan for centuries. Each capsule in this 30-capsule pack from Swanson Ultra delivers 100 mg of nattokinase, standardised to provide 2,000 fibrinolytic units (FU) of activity — the measurement used to indicate enzyme potency in this category.
The enzyme is produced during the fermentation of soybeans and is the principal active component that makes natto nutritionally distinctive. Swanson Ultra is a well-regarded American supplement brand known for consistent quality standards, and this product is free from unnecessary fillers, making it a straightforward capsule supplement for those seeking a concentrated source of this fermented-food enzyme.
With 30 capsules per pack, this product is well suited to those exploring Japanese-inspired dietary traditions, individuals following a supplement routine that includes enzyme-based ingredients, or anyone curious about natto but unlikely to incorporate the fermented food itself into their everyday meals.





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