Open Heart Surgery In A Capsule
Clinical studies show that daily Nattokinase can reduce artery plaque by 36%, lower heart attack risk by 25%, and cut stroke risk by 33% — naturally and without side effects.
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"My cardiologist was stunned."
After years of worrying about my heart health, I started taking nattokinase daily. Within weeks — better energy, better numbers, peace of mind. — Eric T., 58
Japan lives longer than anyone else on earth.
16 years. 29,079 people. One clear answer.
Researchers tracked 29,079 Japanese adults for 16 years. People who ate the most natto had far fewer heart attacks and strokes.
4 years. 1,062 people. Every artery scanned.
Scientists gave 1,062 people daily Nattokinase. They scanned their arteries with ultrasound for 4 years. The plaque shrank. The arteries got healthier.
Shrank
Measured by ultrasound scan
Average drop in plaque size
Daily Nattokinase cut existing plaque by more than a third. It's the first oral supplement to show this kind of result in a large trial.
Healthier
Measured by ultrasound scan
Of people saw measurable improvement
More than 3 in 4 people had healthier artery walls at the end of the study. That's a key marker of heart health.
People won't stop messaging us.
Raw, unedited messages from real customers. Every week. Every day. We publish them as we get them.
I've been using these supplements to support my heart and they've been wonderful.
Join 100,000+ people already taking it.
As featured in
The cause, the solution, the result.
Plaque builds up
A sticky protein called fibrin builds up in your arteries. It hardens into plaque. Blood flow slows. One day a chunk breaks off — and that's a heart attack or stroke.
Nattokinase
A natural enzyme from a Japanese food called natto. It breaks down the fibrin that holds plaque together. It helps your body clear clots before they form.
Real results
36% less plaque. 13 mmHg lower blood pressure. 33% lower stroke risk. Published in real clinical studies. Not marketing.
We tested 7 EU Nattokinase brands. All 7 were underdosed.
We bought the top-selling Nattokinase capsules in Europe. We sent them to an independent ISO-accredited lab. We asked one question: does the bottle contain the enzyme activity the label claims? Here's what came back.
| Brand | Label Claim | Lab Result | % of Claim | Verdict |
|---|---|---|---|---|
| Natural Foundation Supplements ★ | 5,000 FU / capsule | >6,720 FU / capsule | >134% | Pass |
| Horbaach | 4,000 FU / 2 capsules | 3,720 FU / 2 capsules | 93% | Marginal |
| Double Wood | 4,000 FU / 2 capsules | 2,800 FU / 2 capsules | 70% | Fail |
| Luma Nutrition | 4,000 FU / 2 capsules | <2,660 FU / 2 capsules | <66.5% | Fail |
| Bulk Supplements | 4,000 FU / capsule | <2,680 FU / capsule | <67% | Fail |
| Hybrid Health | 5,000 FU / 2 capsules | 1,380 FU / 2 capsules | 27.6% | Fail |
| Raibu | 2,000 FU / capsule | 528 FU / capsule | 26.4% | Fail |
| Vinco | 4,000 FU / 2 capsules | 711 FU / 2 capsules | 17.8% | Fail |
All testing conducted by SORA Labs (ISO 17025:2017 accredited) using the GM0068 fibrinolytic unit assay. 7 out of 7 competitor brands delivered less than their label claimed. One brand had just 17.8% of what the label promised — less than a fifth of what customers paid for.
Watch our full investigation into how EU Nattokinase brands underdose their capsules.
That's why we test every single batch.
We're the only EU Nattokinase brand that tests every batch with an outside lab — and publishes every result. Not once a year. Every batch. Before it ships.
We make it in Oxford
Every capsule is made in our own GMP-certified facility in Kidlington, just outside Oxford. No contract manufacturers. No outsourcing.
We send it to the lab
Before a single bottle ships, we send a sample to SORA Laboratories — an independent lab accredited to ISO 17025:2017. They measure the real enzyme activity.
We publish the results
Every lab report goes live at testing.nfsupplements.co.uk. You can pull up the exact report for the bottle in your hand.
Want to see a real lab report right now? → testing.nfsupplements.co.uk ↗
Pick your supply. Cancel any time.
30 capsules per bottle · 5,000 FU verified Nattokinase per capsule · lab-tested every batch.
1 Bottle
- Free "Cardiovascular Health" eBook€9.99
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3 Bottles
- Free "Cardiovascular Health" eBook€9.99
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People who actually feel the difference.
"My doctor was shocked."To be honest, this product is profoundly effective. My doctor was surprised by the drop of my cholesterol reading. I'm ordering more today.
"Healthier than I've felt in years."After 10 days on the natto my chest tightness finally stopped. I feel healthier than I have in 3 years. This genuinely may have saved my life.
"My blood pressure is perfect."I take Natto every day. My blood pressure is perfect and my veins on my legs are less swollen and no longer purple. I will keep taking it.
"The honest brand."I've been suspicious of supplement labels for years. This is the first one where the transparency on the testing actually sold me. Lab results published.
"Stopped the statins."I was struggling with bad side effects from prescription statins. This product is helping me lower my cholesterol without them. Huge difference.
"Due heart surgery — my surgeon is happy."I've just ordered my 2nd batch. I'm due heart surgery in the coming weeks and my surgeon is happy with my blood flow and cholesterol.
"Quietly impressed."I have heart failure and after 6 weeks on the 5,000 FU tablets I can breathe more easily and don't get out of breath so quickly. It's noticeable.
"Worth every penny."You're paying for honesty, which is rare in supplements. Circulation improved, blood pressure down, no gut issues. I recommend to everyone I know.
I started this brand because I was tired of being lied to.
I watched family members struggle with heart problems. They took big-name supplements. Nothing happened. So I got curious. I bought the top Nattokinase brands and sent them to a lab.
Most were underdosed. Some had almost no active enzyme at all. So I built NF Supplements to do the opposite. We make everything ourselves in Oxford. We test every batch. We publish every result.
This is the Nattokinase I take every day. I give it to my parents. There's nothing hidden in it. There never will be.
— Logan, Founder of NF Supplements
Things people ask us.
How long does it take to see results?
What is Nattokinase?
How do I know yours has what the label says?
Are there any side effects?
Can I take it with my medication?
How should I take it?
Where is it made?
How long does shipping take? Any customs fees?
What if it doesn't work for me?
Cleaner arteries start today.
Thousands of EU customers already trust us. We're the only Nattokinase brand that publishes every lab test.
Get Mine →Dietary soy and natto intake and cardiovascular disease mortality in Japanese adults: the Takayama study
What they did
Researchers at Gifu University followed 13,355 men and 15,724 women (average age 55) for 16 years. At baseline, each participant completed a detailed food-frequency questionnaire covering 169 food items, including specific items for natto, miso, tofu and other soy foods. The team then tracked cardiovascular and stroke mortality across the full 16-year follow-up and stratified the population into quartiles based on natto intake.
What they found
Higher natto intake was significantly associated with lower risk of death from cardiovascular disease. The effect was independent of overall soy intake — meaning natto itself, not just soy in general, was driving the result. The association was strongest for ischemic stroke.
Key results (highest vs. lowest natto intake)
- −25% lower cardiovascular mortality
- −31% lower risk of all stroke deaths
- −33% lower risk of ischemic stroke death
- No equivalent protective effect seen from non-fermented soy alone
Why it matters
Ischemic stroke is caused by a clot blocking blood flow to the brain. Nattokinase, the enzyme unique to natto, has been shown in lab studies to break down fibrin — the protein that holds clots together. This study suggests that population-level effect shows up in real-world mortality data over 16 years.
Nattokinase atherothrombotic prevention study: a 4-year randomized trial in 1,062 participants
What they did
Researchers enrolled 1,062 participants with existing carotid artery plaque (atherosclerosis). Each participant received daily Nattokinase supplementation and was scanned with carotid artery ultrasound at baseline and repeatedly throughout the 4-year study. The primary measurements were carotid plaque size and carotid intima-media thickness (cIMT) — the standard non-invasive markers for arterial health.
What they found
Over 4 years of continuous daily use, Nattokinase produced measurable reductions in existing plaque across the cohort. The effect was dose-dependent, durable, and occurred without the bleeding risks associated with prescription anticoagulants. It is the first large-scale clinical trial to document meaningful plaque regression from any oral supplement.
Key results
- −36% average reduction in carotid plaque size
- 77% of participants showed improved carotid artery wall thickness
- Significant reduction in fibrinogen levels vs. baseline
- No serious adverse events reported across 4 years
Why it matters
Arterial plaque is the root cause of most heart attacks and strokes. For decades, the medical consensus has been that plaque can only be stabilised — not reversed — by lifestyle or oral supplementation. This trial is one of the first to show plaque regression from a non-prescription natural enzyme, measured on ultrasound in over a thousand people.