NATTOKINASE 6000 FU. Potency: 6,000 FU (Fibrinolytic Units). 🌿 Clean: No fillers, binders, or bulking agents ever find their way into our products. Pure and Additive-Free Unlock Your Potential CLEAN PRODUCTS - Purely Potent: No Fillers, No Binders, Just the Active Ingredient – Among the Strongest Available – Proudly Manufactured in the UK.