Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD
Natto
MODERATE EVIDENCEVitaminLast updated
AVELOR SUMMARY
Natto is Japanese fermented soybean — the food source of nattokinase (fibrinolytic enzyme) and vitamin K2 MK-7 (100-1,100 μg per 100g — the richest food source of K2). Also contains PQQ, spermidine, and natto biofilm (Bacillus subtilis natto). 50g natto provides ~1,000 μg K2 MK-7 (5-10x the supplement dose). The strong flavor and stringy texture limit Western acceptance.
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*Reviewed by the Dose AI Research Team and Clinical Advisory Board*
*Last updated: 2026-04-06*
Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.