Physician-guided supplement

Nattokinase 2000 FU

2000 FU

A circulatory and fibrinolytic support enzyme

Dose

1 capsule

Timing

Evening

With

Empty stomach

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What it is

Nattokinase is an enzyme extracted and purified from natto — a traditional Japanese food made from soybeans fermented with the bacterium Bacillus subtilis. Its defining property is fibrinolytic activity: the ability to act on fibrin, the fibrous protein your body uses to form blood clots.

In healthy biology, clot formation and clot breakdown are held in constant balance. Nattokinase is studied for its role in supporting the breakdown side of that balance, complementing your own natural clot-dissolving system. The "2000 FU" on the label refers to its potency, measured in Fibrinolytic Units rather than by weight alone.

At Healthi Life, Nattokinase 2000 FU is introduced within a physician-guided plan — most often after an advanced health check-up and as part of our longevity programs. Eligibility, dose and suitability are determined after a medical consultation.

Why fibrinolytic units (FU)

With most supplements the number on the label is a weight — so many milligrams. Nattokinase is different: what matters is not how much enzyme is present, but how active it is. Fibrinolytic Units (FU) measure that activity directly — the enzyme's actual clot-dissolving power in a standardized laboratory assay. A 2000 FU capsule is standardized to deliver a consistent, measured level of activity in every dose. It also matters for quality: enzyme activity degrades with heat, moisture and time, so FU standardization is your assurance that the capsule delivers the potency it claims.

The science

How it supports your biology

Fibrinolysis & Clot Balance
Nattokinase acts directly on fibrin, the protein scaffold of blood clots. It is studied for supporting the body's own fibrinolytic system — the process that keeps clot formation and breakdown in healthy balance.
Circulation & Blood Flow
By supporting healthy fibrin balance and blood viscosity, nattokinase is associated with smoother circulation and the efficient delivery of oxygen and nutrients through small vessels.
Blood Pressure & Vascular Support
Clinical studies have examined nattokinase for supporting blood pressure already in the upper-normal range, and for general vascular health. This is supportive only — not a treatment for diagnosed hypertension.
Blood Viscosity (Rheology)
Nattokinase has been studied for its effect on blood "stickiness" and red-cell aggregation — properties that influence how easily blood moves, particularly through the body's smallest vessels.

How to take it

Dose

1 capsule

Timing

Evening

With

Empty stomach

Why evening, and why empty stomach

Nattokinase is an enzyme, and like all enzymes it can be drawn into the work of digesting a meal if taken with food. Taking it on an empty stomach — at least one hour before eating or two hours after — keeps its activity available for circulatory support rather than spent on digestion. Evening or bedtime dosing is commonly used because the body's own fibrinolytic activity naturally dips overnight and into the early-morning hours. Exact timing is set by your physician based on your individual profile and current medications.

Safety note — drug–nutrient interaction

Nattokinase has genuine fibrinolytic and mild blood-thinning activity. Because of this, the following points are essential, not optional:

  • If you take anticoagulant or antiplatelet medication — for example warfarin, a DOAC such as apixaban or rivaroxaban, aspirin or clopidogrel — do not start nattokinase without direct physician supervision. The combined effect can meaningfully increase bleeding risk.
  • Discontinue nattokinase at least one to two weeks before any planned surgery or dental procedure, and inform your surgeon or dentist.
  • Use caution if you have a bleeding disorder, a history of hemorrhagic (bleeding) stroke, or active stomach ulcers.
  • Other blood-thinning supplements — fish oil, ginkgo, garlic, high-dose vitamin E — add to its effect. Review your full supplement list with your physician.
  • Because nattokinase is derived from soybeans, anyone with a soy allergy should review the product before starting.

Frequently asked questions

Medically reviewed by Dr. Petch & Dr. First

International Board of Lifestyle Medicine (IBLM) — Diplomate · Dermatologist & Peptides Specialist

Last reviewed: July 1, 2026

This page is for general information and does not constitute medical advice, diagnosis, or treatment. Results vary between individuals. Always consult a qualified physician about your condition. See our full medical disclaimer.

Start with an assessment

Nattokinase 2000 FU is one part of a supervised plan. Book a physician consultation to review whether it is right for you.

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