At Mercola.com, Dr. Joseph Mercola discusses the potential for nattokinase to break down blood clots and thin blood. He writes:

• A single 2,000-FU capsule of nattokinase shifted multiple clotting markers within hours, showing your blood’s clotting balance responds quickly to targeted enzymes
• Clot breakdown markers increased while certain clotting factors decreased, indicating a coordinated move toward a less clot-prone state without pushing lab values outside normal ranges
• Nattokinase works in several ways at once — it cuts apart fibrin directly, boosts your body’s main clot-dissolving enzyme and strengthens natural anti-clot defenses
• Repeated clot formation on damaged artery walls contributes to plaque buildup over time, so improving clot breakdown supports healthier blood flow and lowers the risk of blockage
• Long-term clot control depends on more than enzymes alone — reducing seed oils, improving insulin sensitivity, restoring cellular energy and healing your gut address the root causes that drive abnormal clot formation

Read more here.