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Nattokinase (Nattokinase (Subtilisin NAT))

Category: Cardiovascular. Status: Dietary supplement.

A fibrinolytic enzyme extracted from natto (fermented soybeans) with potent clot-dissolving properties. Used for cardiovascular protection, blood pressure reduction, and as a natural alternative to pharmaceutical anticoagulants.

How it works

Directly degrades fibrin in blood clots via proteolytic activity. Also activates endogenous tissue plasminogen activator (tPA) and suppresses plasminogen activator inhibitor-1 (PAI-1), enhancing the body's own fibrinolytic system.

Key facts

  • Molecular weight: ~27,728 Da
  • Half-life: ~8-12 hours (fibrinolytic activity)
  • Bioavailability: Oral absorption confirmed; survives GI tract
  • Storage: Room temperature. Protect from moisture and heat.

Dosing overview

  • Typical dose: 2000-4000 FU (fibrinolytic units)
  • Frequency: Daily on empty stomach
  • Duration: Ongoing
  • Route: Oral capsule

Reported benefits

  • Fibrin clot dissolution
  • Blood pressure reduction
  • Improved blood viscosity
  • Reduced DVT risk
  • Atherosclerosis prevention
  • Natural anticoagulant alternative

Possible side effects

  • Increased bleeding risk
  • Bruising
  • Rare: GI discomfort
  • Contraindicated pre-surgery

Research

  • Nattokinase and blood pressure (2021): Meta-analysis of 12 RCTs showed systolic BP reduction of 5.5 mmHg and diastolic 2.7 mmHg over 8 weeks of supplementation.
  • Nattokinase fibrinolytic activity in humans (2022): 4000 FU/day reduced D-dimer and fibrin degradation products by 35% in healthy adults with elevated cardiovascular risk.

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Research and educational reference only. Not medical advice.