Fibrinolytic enzyme from natto (Japanese fermented soy). 2,000 FU/day. Dissolves fibrin clots directly — acts as a natural 'blood thinner' without anticoagulant side effects in most studies. CONTRAINDICATED with anticoagulants. NSK-SD® is the vitamin K2-removed form (for people on warfarin). --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.