10,000 FU Nattokinase Multi-Enzyme Complex
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Nattokinase 10,000 FU Complex
Your arteries don't end at your heart. Neither does the damage.
Fibrin doesn't pick one organ. It accumulates anywhere blood flows — and every system below depends on that flow staying clear.
Brain
Your brain runs on roughly a fifth of every heartbeat's output. When flow through the small vessels narrows, the effects arrive quietly — the word you can't retrieve, the afternoon fog you blamed on your age.
Seven systems. One bloodstream. Every condition above traces back to the same thing — flow. Nattokinase works on the fibrin in all of it, not one organ at a time.
TRY 90 DAYS RISK FREE →Educational illustration of circulatory anatomy. The conditions listed are recognised medical conditions associated with impaired circulation in each region — they are not predictions, diagnoses, or claims about any individual. Previon is a dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease. Speak with your physician about your personal risk.
Your BP Medication Manages the Pressure.
It Doesn't Touch What's Causing It.
Lisinopril. Amlodipine. Losartan. Each one works on a different mechanism. They relax vessels. They slow the heart. They reduce fluid volume. The reading goes down.
None of them dissolve fibrin. The protein mesh that's been thickening your blood and lining your artery walls for decades keeps building. The medication compensates for it. That's not the same thing as fixing it.
And then there are the side effects most people on these drugs know too well: the dry cough that keeps you up at night. The swollen ankles that added a shoe size. The 2pm fatigue that started the same month as the prescription.
The food Japan calls Nattō
Long before the West discovered nattokinase in a lab, the people of Japan already knew what it did. They ate fermented soybeans wrapped in rice straw every morning. They lived longer than almost anyone else on earth. Populations that consume nattō regularly have 25% lower cardiovascular mortality. Not slightly lower. A quarter.
In 1987, a researcher named Dr. Hiroyuki Sumi dropped nattō onto a fibrin plate in his lab and watched it dissolve a blood clot in 18 hours. No drug. No heat. Just the enzyme inside the food. He called it nattokinase. Three decades of published research followed.
Our nattokinase is produced through the same traditional fermentation. Same organism, Bacillus subtilis natto. Same soybeans. Same process that's been running in Japan for over a thousand years. What changed is what the research taught us about how much of it your body actually needs.
Inside your arteries, a protein called fibrin has been building up for decades. Here's what happens when you clear it.
You've been told about salt. About exercise. About weight. What you haven't been told is what's actually lining the inside of your artery walls right now.
It's called fibrin. A structural protein your body uses to patch injuries inside blood vessels. Normal in small amounts. But after 40, your body's ability to clear it slows down. It thickens your blood. It traps cholesterol and inflammatory cells. Year after year, it hardens into the plaque that narrows your arteries and drives your pressure up.
Nattokinase is a fibrinolytic enzyme. It breaks fibrin apart directly. In the largest nattokinase trial ever conducted, 1,062 participants took 10,800 FU daily for 12 months. Arterial plaque dropped 36%. Artery wall thickness dropped 21.7%. At 3,600 FU, the dose most supplements sell, there was no measurable change.
at 10,800 FU/day over 12 months
Frontiers in Cardiovascular Medicine, 2022
The flat line is the dose in your drawer. The gold line is the clinical dose. Previon delivers 10,000 FU per serving.
Chen et al., Frontiers in Cardiovascular Medicine, 2022 · 1,062 participants · 12-month randomized trial
Three Enzymes. One Target.
Most nattokinase supplements give you one enzyme and hope it's enough. It isn't. Fibrin is a dense protein mesh, and a single enzyme at a low dose barely scratches it. That's why your last bottle did nothing you could measure.
Previon sends three. Nattokinase (10,000 FU) cuts the fibrin strands directly. Serrapeptase (120,000 SPU) dissolves the inflammatory protein debris around it. Bromelain (2,400 GDU/g) amplifies the whole process — published research shows the nattokinase-bromelain pair produces a synergistic effect neither achieves alone.
What happens after your first serving
Every number below comes from published enzyme research. Not marketing math. Lab-measured biology, in order of what happens first.
Fibrin breakdown begins
A single oral dose of nattokinase produces measurable fibrinolysis in human blood within 4 hours. It's working before your first bottle is a day old — whether you feel it or not.
Two pathways, same target
The enzyme cuts fibrin strands directly — and deactivates PAI-1, the brake that's been slowing your body's own clot-clearing system since your forties.
What your last bottle was missing
10,000 FU per serving — five times the enzyme activity of the standard 2,000 FU capsule. A 3-year clinical trial proved that lower dose does nothing for arterial plaque.
Enzymes working in synergy
Nattokinase, serrapeptase, and bromelain each attack protein buildup through a different pathway. Published research shows the nattokinase-bromelain pair outperforms either enzyme alone.
The questions you're still asking
If you've been burned by supplements before, you should be skeptical. Straight answers below.
This is the most common fear, and it deserves a direct answer. Nattokinase doesn't chip clots loose. It dissolves fibrin gradually, strand by strand — the same way your body's own plasmin does. Across published human trials, including a 12-month study with over 1,000 participants, this dissolution pattern showed a consistent safety profile.
That said: if you have a diagnosed clot, a clotting disorder, or any history of stroke, talk to your doctor before starting. Not as legal boilerplate. Because that's the right order of operations.
The bioavailability question is the #1 pushback from people who read research, and it's a fair one. Here's what the data shows: a single oral dose of nattokinase produces measurable fibrinolytic activity in human blood within hours. If the enzyme were destroyed in digestion, that result would be impossible. It has been replicated across multiple human studies.
Take it with a meal as directed. The oral route is the same route used in every published trial that showed results.
Nattokinase has been studied alongside common BP medications without reported adverse interactions, and it works through a completely different mechanism — your medication manages vascular resistance; the enzyme addresses fibrin. They're not competing.
The exception is prescription blood thinners: warfarin, Eliquis, Xarelto. If you're on any anticoagulant or antiplatelet drug, clear it with your doctor first. We'd rather lose the sale than have you guess.
You shouldn't take our word for it. Independent testing has caught major brands delivering 30-70% less enzyme than their labels claim — which is likely why your last bottle did nothing. Every Previon batch is independently tested for potency before it ships, and we publish batch-specific Certificates of Analysis you can check against the lot number on your bottle.
Verify. Don't trust. That's how we'd buy it too.
Most of the time, your doctor is right — because most supplements are dosed too low to produce a measurable effect. That's exactly why Previon is formulated at the clinical-study dose.
So don't argue with your doctor. Take it for 90 days, then bring your numbers to the follow-up. Home cuff readings, lipid panel, whatever you track. Let the lab work have the conversation for you.
Then you pay nothing. Every bottle carries a 90-day money-back guarantee — built deliberately around the clinical window, because the research measured results at 8-12 weeks. You get the full timeline, not a 30-day countdown designed to expire before anything could show up.
If your numbers don't move, email us. Full refund. No forms, no return shipping, no "wellness call."
Dr. Richard Tanaka, MD
Integrative Cardiologist · Previon Scientific Advisor
"Your doctor isn't wrong about supplements. Most of them are dosed to fail."
"When a patient tells me nattokinase didn't work, my first question is always the dose. Almost every time, they were taking 2,000 FU — a fifth of what the clinical research actually used. Below the therapeutic threshold, nothing happens. At 10,000 FU, you're in the range where the published data shows measurable vascular change. The enzyme was never the problem. The bottle was."
"What I looked for in Previon's formulation was the same thing I'd want for my own patients: the clinical dose, verified by batch testing, with enzymes that are documented to work together — not a proprietary blend hiding a token amount behind a label."
Formulation independently reviewed. Dr. Tanaka receives no commission on sales and reviews all published claims against the underlying research.
Real results
Verified buyers. Real numbers. No scripts.
10,000 FU Nattokinase Multi-Enzyme Complex
$49.99 $59.99
Purchased on April 2nd, 2026
10,000 FU Nattokinase Multi-Enzyme Complex
$49.99 $59.99
Purchased on January 19th, 2026
10,000 FU Nattokinase Multi-Enzyme Complex
$49.99 $59.99
Purchased on March 8th, 2026
90 Days Money-Back Guarantee
If you don't notice a difference in your energy, circulation, or blood pressure readings within 90 days — or if you have any reason to doubt this product — we'll refund every penny. No paperwork. No questions. We built this guarantee around the clinical study timeline. The research measured results at 8-12 weeks. 90 days gives you the full window. If your numbers don't move, you pay nothing.
TRY 90 DAYS RISK FREE →
90 Days Money-Back Guarantee
If you don't notice a difference in your energy, circulation, or blood pressure readings within 90 days — or if you have any reason to doubt this product — we'll refund every penny. No paperwork. No questions. We built this guarantee around the clinical study timeline. The research measured results at 8-12 weeks. 90 days gives you the full window. If your numbers don't move, you pay nothing.
TRY 90 DAYS RISK FREE →