What is nattokinase and what does it do?

Nattokinase is an enzyme extracted from natto, fermented soybeans. It is taken as a supplement for circulatory and cardiovascular support, though evidence in humans is limited.

How does Kal Nattokinase compare with combination circulation supplements?

Kal's product is a single-ingredient nattokinase tablet. Rival formulas often add herbs, vitamins or other enzymes, which gives more ingredients but makes it harder to tell what is doing what.

Who should avoid nattokinase?

People taking blood thinners such as warfarin, or with bleeding disorders, should talk to a doctor before using it. It may also not suit those with soy allergy.

How should I take it?

Follow the directions on the label. Nattokinase is commonly taken on an empty stomach, but check the product label and ask a pharmacist if unsure.

Is it suitable for vegetarians?

Nattokinase is produced by fermentation, and the tablet form is generally considered suitable for vegetarians. Check the label for any non-vegetarian excipients.