Clear arteries. Restored circulation.
Practitioner-grade nattokinase, formulated by clinicians.
Practitioner-grade nattokinase, dosed at 4,000 FU per serving and independently tested every batch — for the cardiovascular health you deserve.
Practitioner-grade answers to your questions
Transparency matters when it comes to cardiovascular supplements. Below you'll find answers to the most common questions about nattokinase, how it works, safety with blood thinners, and how we ensure practitioner-grade quality in every batch.
What is nattokinase?
Nattokinase is an enzyme extracted from natto, a traditional Japanese fermented soybean food. Discovered in Tokyo in 1980 by Dr. Hiroyuki Sumi, it's been studied for its effect on fibrin — a protein involved in blood clotting and arterial plaque.
How is this different from store-bought nattokinase?
Most store-bought nattokinase is dosed at 1,000–2,000 FU per serving. The Clinician Company formulates at 4,000 FU — the dose practitioners actually use in clinical practice. Every batch is third-party tested and vitamin K2 is removed for safety with blood thinners.
Is it safe to take with blood thinners?
Talk to your prescribing physician first. Our formulation removes vitamin K2 (which interferes with warfarin) but nattokinase itself has anti-coagulant effects. This is a conversation for your care team.
How long until I notice a difference?
Most clinical studies measure outcomes over 8–12 weeks. Fibrin clearance and circulation markers shift gradually, not overnight.
When should I take it?
On an empty stomach, ideally before bed or 30 minutes before a meal. Food can reduce enzyme activity.
Is this FDA-approved?
Dietary supplements are not FDA-approved; they're regulated differently from drugs. Our manufacturing facility is FDA-registered and follows GMP standards.
What's your refund policy?
60-day money-back guarantee. If you're not satisfied for any reason, email support@theclinicianco.com for a full refund.
Is this third-party tested?
Yes — every batch is independently tested for potency (FU activity), purity (heavy metals, microbials), and label accuracy. Certificates of Analysis available on request.
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