Heart Health

Nattokinase

Also known as: Natto enzyme, NK

Evidence

Enzyme from natto with fibrinolytic activity. May support healthy circulation and blood viscosity.

Primary uses

Circulation
Blood viscosity
Clot prevention
Blood pressure

How it works

Fibrinolytic activity
May reduce blood viscosity
Blood pressure support

Dosage

Typical range: 2000-4000 FU daily
Timing: Any time, often morning
With food: Optional
Duration: Ongoing for circulation
Special populations: Circulation support, travel, sitting jobs

Forms

Capsules

Safety

Common side effects

Rare

Contraindications

Bleeding disorders
Before surgery
Taking blood thinners

Known interactions

Dangerwith blood thinners
Nattokinase has potent blood-thinning properties

Evidence notes

Fibrinolytic enzyme

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.