#1 Rated Natural Heart Formula of 2026
Woman holding BlueOrganics Liposomal Nattokinase
OptimalHealthReview
5 reasons big pharma doesn't want you to know about…

Nattokinase & the Ingredients That Make It Work

A 1,000-year-old food enzyme, the nutrients that multiply its effect, and the research that proves it.

Read The 5 Reasons
4-month review5 options examined16 peer-reviewed sources
Paul Hendricks
Paul Hendricks · Senior Investigations Editor
Updated 10/2026 · 12 min read

A food enzyme you can't patent doesn't get a sales force, a TV campaign or a mention at your annual check-up. That's the simplest explanation for why most people over 50 have never heard of nattokinase, even though it was isolated from a traditional Japanese food in 1980 and has since been through a twelve-month, 1,062-person human study.

It's also why almost nobody explains the other half of the story: nattokinase works best alongside a few specific nutrients, and together they reach parts of the cardiovascular system that the standard prescriptions were never designed to touch.

Here are the five things we found, in the order that matters.

01
Reason 01 / 05

Cardiovascular Decline Is Four Problems at Once

Not one failure. Four, each running on its own and speeding up with age. A complete approach addresses all four. Almost nothing on the market addresses more than one.

I · Fibrin Builds Up

The cleanup crew in your arteries is still working. After 50, the brake gets pressed.

Tap to learn more +

Your body runs a continuous cleanup operation inside every artery called fibrinolysis. It breaks down the small fibrin deposits that settle in artery walls every day of your life.

The crew doesn't quit at 50. The brake gets pressed. A compound called PAI-1 is meant to regulate that cleanup so you don't bleed too easily, but its levels climb steadily with age. Research shows fibrinolysis becomes measurably impaired in older adults, mainly because of rising PAI-1.1 A 2026 review in GeroScience describes a "hypofibrinolytic" pattern typical of older adults.2

In plain terms: not a deficiency, a stuck brake. Nothing in a statin, an ACE inhibitor or a garlic softgel releases it.

Fibrin mesh trapping red blood cells

Fibrin mesh trapping red blood cells inside an artery.

Age 35 vs 60: cleanup crew blocked by PAI-1

Age 35 against age 60. Same cleanup crew. Rising PAI-1 is what clamps it.

II · Pressure Climbs

Arteries stiffen, nitric oxide fades, and the reading creeps up year after year.

Tap to learn more +

The smooth muscle lining your arteries stiffens with age as nitric oxide production fades. ACE inhibitors relax the muscle and bring the number down, but they don't address the stiffening underneath, which is why doses so often go up over the years instead of down.

Flexible wall vs stiff wall

A flexible wall absorbs the pulse. A stiff one passes it straight through.

III · Calcium Goes Astray

Calcium meant for your bones ends up in your artery walls without K2 to guide it.

Tap to learn more +

The signal that routes calcium correctly is vitamin K2, specifically MK-7. The Rotterdam Study followed 4,807 people for over a decade and found the highest-K2 group had substantially less arterial calcification than the lowest.3 Most American diets contain almost none of it, and no common heart prescription supplies it.

Healthy bone cross-section

Where calcium belongs: inside the bone.

K2 switch

K2 is the switch. When it's present, calcium goes to bone. When it's absent, calcium goes to the wall.

IV · Energy Runs Low

Inflammation damages the lining, and heart cells run short on CoQ10, especially on a statin.

Tap to learn more +

Blood sugar and lipid handling sit upstream of circulation. Low-grade inflammation damages the artery lining, the damage attracts platelets, platelets recruit fibrin, and fibrin recruits calcium. Treat one station and the loop keeps turning.

The other half is energy. Every cell in your heart muscle runs on CoQ10, which your body makes through the mevalonate pathway, the same pathway a statin blocks.8 A meta-analysis of randomized trials found statins lower circulating CoQ10 at every type and dose.9

Inflammation damage cycle

Five stations, one loop.

Four mechanisms. Address one,
and the other three keep working.

02
Reason 02 / 05

Nattokinase Is Proven to Work, at the Right Dose

Not a mouse study. Not a test tube. Twelve months in 1,062 real people.

Natto, fermented soybeans, lifted with chopsticks

Natto: fermented soybeans eaten daily in Japan for over 1,000 years, and the source of nattokinase.

In 2022, Frontiers in Cardiovascular Medicine published the largest human study of nattokinase ever run.6 Researchers followed 1,062 adults for twelve months, measuring the arteries in their necks with ultrasound before and after.

At 10,800 FU a day, carotid plaque shrank by up to 36%, and the thickness of the artery wall fell from 1.33 mm to 1.04 mm. Blood lipids improved alongside it. These weren't feelings on a questionnaire. They were measurements on a screen.

Two findings in the same study matter just as much. The lower 3,600 FU arm showed no measurable effect, so the dose decides whether it works. And people who took vitamin K2 alongside nattokinase saw a synergistic improvement, which is why the right formula pairs them.

Artery cross-section before and after: plaque reduced

Illustrative cross-section: an artery narrowed by plaque, and the same artery with a wide-open channel.

36%less carotid plaque
1.33→1.04mm artery-wall thickness
1,062people, 12 months
The catch: most nattokinase on the shelf sits at 2,000–6,000 FU, inside the range the study found did nothing. Others print 20,000 FU or more, a dose no human trial has tested. Which brings us to Reason 3.
Fibrin plate after 75 minutes

Nattokinase on a fibrin plate after 75 minutes. The clear ring is fibrin that has been broken down.

03
Reason 03 / 05

We Ranked the Top Cardiovascular Brands So You Don't Get Sc*mmed

We lab tested the biggest brands. Swipe through all five.

1 / 5
BlueOrganics Cardiovascular Complex#1
9.7/10

BlueOrganics Cardiovascular Complex

Liposomal Nattokinase · Beetroot · CoQ10 · K2 · Berberine
Grade A+Best Overall · cleared all six columns
Our take

Of everything we examined, four prescription categories and the bestselling heart supplements, this was the only formula that covered all four mechanisms at the dose the research actually used, and published a certificate proving that dose was in the capsule. Every other product here is named after an ingredient. This one is named after the problem it solves. That's the difference between a supplement and a protocol.

Mechanism Coverage9.9
Dose Fidelity9.9
Independent Verification9.7
Value9.4
User Satisfaction9.6

Pros

  • All four mechanisms addressed
  • 10,800 FU NSK-SD, matched exactly to the studied dose
  • Actives from whole-food and plant sources: natto, beetroot, barberry
  • Liposomal delivery, the only one we reviewed
  • CoQ10 200 mg as ubiquinol, the compound statins deplete
  • The nattokinase + K2 pairing shown to work synergistically
  • Batch certificate published: 11,040 FU verified
  • No proprietary blend
  • Made in the USA, cGMP facility
  • 60-day money-back guarantee, no return needed

Cons

  • Contains soy (nattokinase is fermented from soybeans)
  • Not on Amazon, direct from the maker only
  • Small batches, can sell out
  • Talk to your doctor first if you take an anticoagulant, especially warfarin (K2)
★★★★★
I checked the certificate before I ordered

"Every other brand wanted me to take the number on the front on faith. This one put the lab result where I could read it first."

Douglas W. · 67 · Colorado · Verified Buyer
★★★★★
My hands are warm at my desk

"Twelve weeks. One afternoon I noticed I hadn't put the space heater on under the desk, and I couldn't remember the last time I had."

Eleanor B. · 71 · Minnesota · Verified Buyer
★★★★★
A number he recognised

"I took the bottle to my cardiologist because I'm on a thinner. He read the label and said ten thousand eight hundred was a figure he actually recognised from the literature."

Martin K. · 69 · Virginia · Verified Buyer

The Bottom Line

The only formulation we reviewed that addressed every documented mechanism at the dose the research actually tested, in a delivery format built to get that dose absorbed, with a published certificate confirming what's in the capsule. BlueOrganics Cardiovascular Complex is our #1 pick for cardiovascular and circulatory support in adults over 50.

Every other product in this review is named after a single ingredient. This one is named after the whole system it supports. For a reader who thinks holistically, that's the difference between treating a symptom and supporting the body as a whole.

Mechanism I, clearing fibrin. NSK-SD nattokinase, the standardized Japanese form used in the published research, made from natto, a fermented soybean food eaten in Japan for over a thousand years. Its documented action includes inactivating PAI-1, the brake on your body's own cleanup system. It doesn't override your body. It releases the brake so your body can do what it was designed to do.

Mechanism II, blood pressure. Beetroot extract at 3,000 mg. Beetroot feeds the nitric oxide pathway, which helps the artery wall relax. Twenty-two pooled trials with 1,248 people found an average systolic drop of 3.55 mmHg, and 5.31 mmHg in people who were already hypertensive.5 At #3 below, beetroot is the whole product. Here it is one of five.

Mechanism III, calcium routing. Vitamin K2 as MK-7 at 200 mcg, the long-lasting form used in the cohort research.3 Natto itself happens to be the richest food source of K2 on earth, so this pairing is how traditional diets got both. In the same 1,062-person study, researchers found that K2 alongside nattokinase produced a synergistic effect.6 As far as we can tell, no other nattokinase brand has built its formula around that finding.

Mechanism IV, metabolic and mitochondrial. Berberine HCl at 500 mg, the plant compound found in barberry and goldenseal, at the dose used in the clinical work on glucose and lipids.11 And CoQ10 at 200 mg as ubiquinol, the ready-to-use form. Your body makes CoQ10 through the mevalonate pathway, the same pathway statins block.8 A meta-analysis of randomized trials found statins lower circulating CoQ10 at every type and dose.9 The result is simple: something in many morning routines lowers a compound the heart runs on, and this is the only product in our review that puts it back.

Plaque before and after

Illustrative: plaque narrowing an artery, and an open channel.

Dose fidelity. 10,800 FU. Not 9,000, not 20,000. The exact amount from the twelve-month, 1,062-person study, the same study that found 3,600 FU did nothing measurable.6 Above 10,800 FU there is no twelve-month trial to point to.

Verified label. BlueOrganics publishes a batch-specific Certificate of Analysis. The launch batch measured 11,040 FU against a 10,800 FU label, which is 102%, inside ConsumerLab's 100–135% pass window.4 The same certificate shows K2, CoQ10 and berberine on target, heavy metals passing, and no E. coli or Salmonella.

Stomach acid

Stomach acid is built to break proteins down, and nattokinase is a protein.

Delivery. Nattokinase is an enzyme, a delicate protein. BlueOrganics wraps it in a liposomal phospholipid carrier so it's protected on its way through the stomach. Other brands chase a bigger number on the front. This one focuses on how much of the dose arrives.

Why it didn't go higher. We asked. The answer was the only defensible one: there's nothing above 10,800 FU to copy. No twelve-month outcome trial, no plaque data, and no safety window established in a population where many people take anticoagulants. Printing 20,000 doesn't double the evidence. It walks past the edge of it.

The right replacement. Every other product on this page is judged on what it adds. This is the only one that also gives back something a common prescription quietly removes: CoQ10.

BlueOrganics certificate of analysis

The certificate. A batch number, a measured result and the test method, printed side by side.

Verdict: The only formula we reviewed that supports all four of the body's documented processes, at the dose the research actually tested, protected for absorption, with a published certificate. Our #1 pick for natural cardiovascular and circulatory support after 50.
Check Availability Of BlueOrganics →Reader package · 60-day money-back guarantee
Prescriptions#2
6.6/10

Prescriptions

Lisinopril · Atorvastatin · Eliquis / Warfarin
Grade C
Our take

Start with what prescriptions do well: they score highest on verification, tested to a standard no supplement matches, and nothing here is a reason to stop one. But each covers roughly one mechanism of four. None clears fibrin already in the artery wall, none routes calcium, and statins lower CoQ10 as part of how they work.

Mechanism Coverage5.2
Dose Fidelity9.0
Independent Verification9.8
Value6.8
User Satisfaction4.9

Pros

  • Highest verification score on this page
  • Tested and documented to a standard no supplement matches
  • Each does its one job, by design

Cons

  • About one mechanism of four per prescription
  • Nothing addresses PAI-1 or existing fibrin
  • Nothing routes calcium; statins lower CoQ10

The Bottom Line

This is the section to read slowly if you take something every morning.

Lisinopril and the ACE inhibitor class. Lowers blood pressure. That's the job, and it does it. What's rarely discussed at the annual visit is what lisinopril doesn't do: it doesn't clear fibrin, it doesn't route calcium, and it doesn't touch PAI-1. The number on the chart came down. The other three mechanisms ran uninterrupted the whole decade.

Atorvastatin and the statin class. Lowers LDL cholesterol. Even on the most generous reading, statins don't dissolve existing fibrin, don't lower blood pressure and don't route calcium. Coronary calcium scores often keep climbing on statin therapy.

And there's a second thing a statin does that almost nobody explains. Statins block HMG-CoA reductase, the rate-limiting enzyme of the mevalonate pathway, the same pathway your body uses to make CoQ10, the compound every heart cell runs on.8 Block the enzyme and you lower both, across every statin type and dose.9 If you've been on a statin for years and quietly wondered why the stairs got harder, this is the conversation nobody started with you.

Eliquis, Warfarin, Xarelto, Pradaxa. Warfarin, sold today as Coumadin, was first commercialized in 1948, not as medicine but as a rodenticide, patented by the Wisconsin Alumni Research Foundation. In 1954 the same molecule was approved for human prescription.7 The newer anticoagulants work through different pathways but share one limitation: they prevent new clots. They were never designed to clear fibrin built up over thirty years. That job belongs to your own fibrinolytic system, the one with the brake stuck on.

1948 warfarin rodenticide advertisement

A 1948-style advertisement for warfarin as a rodenticide, sold to professional exterminators.

One disclosure, on the record. Vitamin K is warfarin's antidote, and vitamin K2 is one of the five actives in our #1 pick. If you take warfarin, speak to your prescriber before adding K2 to anything. The newer anticoagulants don't work through vitamin K.

Nothing in this article is a reason to stop taking a prescription. Your blood pressure medication is doing what it was designed to do, and your anticoagulant is preventing the next clot. Keep taking them, and tell your prescriber before you add anything.

Reviewer's notes · why this placement

Start with what prescriptions win, because it's the highest figure on this page: 9.8 on independent verification. Every compound here has been through trials no supplement in this review has matched.

Coverage is where they score 5.2. Each addresses roughly one mechanism of four. None clears fibrin already deposited in the artery wall, none routes calcium and none touches PAI-1.

And one runs the other way, which is why the metabolic column reads DEPLETES: statins lower CoQ10 through the very pathway they act on. Then ask the question this review is built around: what is being done about fibrinolytic activity, calcium routing and PAI-1?

Verdict: Each prescription addresses one mechanism, properly, by design. Keep taking them. None are aimed at the other three.
Rosabella#3
5.9/10

Rosabella

Beetroot extract · single ingredient
Grade C−
Our take

One of the better-marketed heart supplements running ads right now, with warm, effective copy. The beetroot evidence is real: 22 pooled trials show a modest drop in systolic pressure. But it's one mechanism of four, and a normal reading on a home cuff isn't the same as a healthy artery.

Mechanism Coverage3.0
Dose Fidelity5.5
Independent Verification5.2
Value7.8
User Satisfaction5.6

Pros

  • Real, replicated blood pressure evidence
  • Inexpensive

Cons

  • One mechanism of four
  • No disclosed clinical threshold dose
  • No published batch certificate we could find

The Bottom Line

Rosabella is among the better-marketed heart supplements running paid traffic right now. The copy is written in a warm, first-person voice, and it's effective writing.

The product does what beetroot does, and that evidence is real. A meta-analysis of 22 trials and 1,248 people found beetroot produced an average systolic drop of 3.55 mmHg, and 5.31 mmHg in people already hypertensive.5

That's a genuine result, and it's the entire result. One mechanism: blood pressure, through nitric oxide. Beetroot doesn't clear fibrin, doesn't route calcium and does nothing for metabolic control.

A declaration, in fairness. You should be suspicious of any review that criticizes an ingredient while quietly selling it. Beetroot is in our #1 pick, at 3,000 mg, as one of five actives covering one of four mechanisms. That's the argument of this entire review in one sentence, and it applies to us exactly as it applies to Rosabella.

Why one mechanism is a problem, not a partial win. Plenty of heart events happen in people whose blood pressure reads normal on a home cuff, because the process was running through the other three mechanisms the whole time. A normal number on a machine isn't the same as a healthy artery.

If blood pressure is the only thing you're managing, beetroot has evidence behind it. As a cardiovascular protocol, it's one piece of four.

Reviewer's notes · why this placement

The beetroot evidence is real and we scored it honestly: 22 pooled trials, 1,248 people, an average 3.55 mmHg systolic drop.

That's one mechanism of four. Beetroot doesn't clear fibrin, doesn't route calcium and does nothing for metabolic control.

No established clinical threshold dose on the label and no published batch certificate we could locate. A blood pressure helper isn't a cardiovascular protocol.

Verdict: A real benefit, honestly narrow. A blood pressure helper, not a whole-body protocol.
Resilia#4
5.2/10

Resilia

Aged garlic extract · single-ingredient softgel
Grade D
Our take

If you're over 55 and on Facebook, you've likely seen these ads. Aged garlic has genuine evidence for healthy blood pressure. The problem is a single-ingredient softgel sold as if it were a complete heart solution, with nothing for fibrin, calcium, blood sugar, CoQ10 or PAI-1.

Mechanism Coverage3.4
Dose Fidelity5.5
Independent Verification6.5
Value5.2
User Satisfaction3.8

Pros

  • Aged garlic has replicated human evidence
  • Supports healthy blood pressure

Cons

  • One mechanism of four
  • No K2, no fibrinolytic action, no PAI-1 effect
  • No disclosed threshold dose or batch certificate we could find

The Bottom Line

We're starting here because if you're over 55 and use Facebook, you've already seen these ads: the split-screens, the heavy rotation, the line about ingredients used across cultures for thousands of years.

Aged garlic has replicated human evidence for supporting healthy blood pressure. That isn't in question, and it isn't the problem. The problem is what a single-ingredient softgel is being sold as.

One mechanism out of four. It does nothing for fibrin already sitting in your artery walls. Nothing for calcium routing, because there's no K2 in it. Nothing for glucose or lipid handling. Nothing for mitochondrial support, the mechanism that matters most to the statin patients this product advertises to. And nothing for PAI-1, which means the brake described in Reason 1 stays exactly where it is.

Both verification columns score against it for the same reason: no clinical threshold dose is disclosed for the extract on the label, and we couldn't locate a batch-specific Certificate of Analysis.

Reviewer's notes · why this placement

Aged garlic extract is a legitimate ingredient with replicated evidence for supporting healthy blood pressure. Scored on its own, it reaches one mechanism of four.

It does nothing for fibrin, calcium routing, glucose or lipid handling, mitochondrial support or PAI-1.

Both verification columns score against it: no clinical threshold dose is disclosed and we could locate no batch-specific certificate.

Verdict: A traditional ingredient with real evidence for one job, sold as though it does all four.
Blissta Corvael#5
4.8/10

Blissta Corvael

Nattokinase · NSK-SD 20,000 FU
Grade D−Ranked last · untested dose
Our take

At a glance it looks like a serious nattokinase product, with NSK-SD on the label. Then it prints 20,000 FU on the front, 85% above the only dose ever taken through a twelve-month human study, and we couldn't open a batch certificate proving what's inside. With 3 of 8 nattokinase products failing independent label tests, an unverifiable number that high ranks last.

Mechanism Coverage9.6
Dose Fidelity3.5
Independent Verification4.0
Value5.0
User Satisfaction4.1

Pros

  • Uses the NSK-SD standardized strain
  • Prints an FU number on the front

Cons

  • 20,000 FU is 85% above the only trialled dose
  • No batch-specific certificate we could open
  • References CoQ10 but contains none
  • Cites 8x plasmin activity; literature says roughly 4x

The Bottom Line

We want to be straightforward here, because you deserve to understand exactly where this product fell short.

Corvael prints 20,000 FU on the front of the bottle, and that is where our evaluation turned. There is no human outcome trial at 20,000 FU. It's 85% more than the only dose that has ever been through a twelve-month human study, and the space above that number is empty. Not contradicted. Unexamined.

Why dose inflation happens. When brands run out of ways to stand apart, the only lever left is the number on the front, so the number goes up. Not because a trial supported it, but because 20,000 looks better in an ad than 10,800.

In most categories that's merely wasteful. Here it isn't. Nattokinase has fibrinolytic activity and a documented interaction with anticoagulant medication, and many of the people buying it take exactly those prescriptions. A dose 85% above anything trialled, sold into that group, isn't a stronger product. It's an untested variable in the people least able to absorb one.

The certificate. The marketing says certificates are published per batch. We went looking for the document showing a measured FU result against the labelled 20,000 and couldn't retrieve one. "Available on request" isn't published. A batch number isn't a result.

Independent testing found 3 of 8 nattokinase products outside the acceptable range for their own label claim, one delivering less than half its stated activity.4 With an unverifiable 20,000 FU claim, you can't know whether this product sits 85% above the studied dose or nowhere near it.

Two smaller discrepancies go to how a company handles the limits of its own evidence. The marketing references protecting CoQ10 levels, yet there's no CoQ10 in the formula. And it describes nattokinase as "8x more active than plasmin," where the published literature generally places it around 4x.

Reviewer's notes · why this placement

At a glance it looks like a serious nattokinase product. The dose on the front is where it falls apart.

20,000 FU is 85% above the only dose ever taken through a twelve-month human trial. The space above that number isn't contradicted. It's unexamined, and it's being sold to an age group often on anticoagulants.

We looked for a batch-specific certificate showing a measured FU result against the labelled 20,000 and couldn't retrieve one. On the published record, you can't tell whether it sits 85% above the studied dose or nowhere near it.

Verdict: A nattokinase dose no trial has tested, without a certificate we could open. For a product with fibrinolytic activity sold to a heavily medicated age group, that combination ranks last.
04
Reason 04 / 05

One Ingredient Can't Do It Alone. Five Links Can.

Your heart needs a chain, in order. Break one link and the chain drops.

Link 1 of 5 · Nattokinase

Release the brake

Your blood does two opposite jobs: it forms clots to stop bleeding, and it clears them once they've done their job. Prescription blood thinners work on the forming side. Banner Health says it plainly about apixaban: it's mainly used to prevent new clots rather than dissolve existing ones. The clearing side runs on plasmin, and plasmin's brake, PAI-1, climbs decade after decade. Nattokinase works on that brake.

Without this link: The brake stays on, and fibrin is laid down faster than it's removed.
Link 2 of 5 · Nattokinase 10,800 FU

Clear the fibrin

With the brake released, nattokinase breaks down fibrin directly: the mesh that has already built up, not just the next clot. At 10,800 FU this is the dose carried through the 12-month, 1,062-person study.

Without this link: Old fibrin stays where it is. Thinners only stop new clots.
Link 3 of 5 · Vitamin K2 (MK-7)

Route the calcium

When fibrin releases, calcium comes with it, and calcium has to go somewhere. K2 as MK-7 activates two proteins, osteocalcin and Matrix Gla Protein, that send calcium into bone and away from the artery wall. The Chen study specifically noted that adding K2 produced synergistic improvement.

Without this link: What you cleared rebuilds, because loose calcium settles back into the wall.
Link 4 of 5 · Beetroot 3,000 mg

Relax the wall

Beetroot's natural nitrates become nitric oxide, the signal that lets the artery wall relax and widen. Twenty-two pooled trials found an average 3.55 mmHg drop in systolic pressure, and 5.31 mmHg in people who were already hypertensive.

Without this link: A stiff wall keeps the pressure high, even with clean arteries.
Link 5 of 5 · CoQ10 + Berberine

Refuel the heart

Every heart cell runs on CoQ10, the compound statins deplete. Ubiquinol, the ready-to-use form, puts it back. Berberine from barberry supports healthy glucose and lipids, the inflammation that starts the whole loop.

Without this link: The heart muscle runs low on fuel, and inflammation restarts the cycle.
Scroll, or use the buttons
This isn't theory bolted on afterward. The 1,062-participant Chen study in Frontiers in Cardiovascular Medicine found that co-administering vitamin K2 with nattokinase produced synergistic improvement.6 BlueOrganics is the only formula in our review built around all five links.

From the Garden, Not the Lab

Nattokinase
NattokinaseFrom natto, fermented soybeans eaten in Japan for 1,000+ years
Beetroot
BeetrootThe garden root behind nitric oxide
Berberine
BerberineFrom barberry and goldenseal, used in traditional herbalism
Vitamin K2
Vitamin K2Richest in natto. Guides calcium into bone
CoQ10
CoQ10The spark of every heart cell. Statins block its production
05
Reason 05 / 05

It Works. Hear From Real Customers.

240,000+ happy customers · ★★★★★ 4.86 based on 240,000+ orders shipped

Customer with his blood pressure log
★★★★★

"I've kept a blood pressure log since 2019 and every page looked the same. Ten weeks in there's a second decline on it. My doctor asked what I'd changed, so I showed him the certificate."

Howard, 67Verified purchase
Customer at home in the evening
★★★★★

"I bought it for my husband and ended up taking it myself. The first thing I noticed wasn't a number. It was that my hands were warm in the evening for the first time in years."

Patricia, 67Verified purchase
Customer beside his car
★★★★★

"The first three weeks nothing happened at all, which the page told me to expect, and I'm glad it did or I'd have quit. Week five my ankles stopped swelling on the long drive to my son's."

Vernon, 70Verified purchase
Customer reading the certificate
★★★★★

"I read the whole certificate before I ordered, and that is the only reason I ordered. Nobody else in this aisle would show me one. Three grandkids, and I intend to see them grown."

Gloria, 68Verified purchase

Swipe to read more reviews

Our #1 Pick: BlueOrganics Cardiovascular Complex

The only formula in our review that supported all four processes, at the dose the research tested, with a published certificate.

BlueOrganics Liposomal Nattokinase Cardiovascular Complex
A+9.7 / 10 overall
★★★★★ 4.8 from verified buyers

Liposomal Nattokinase Cardiovascular Complex

Nattokinase 10,800 FU · Beetroot · CoQ10 · Vitamin K2 · Berberine

  • The exact 10,800 FU dose from the 12-month, 1,062-person study
  • Liposomal delivery, protected through digestion
  • Whole-food and plant actives: natto, beetroot, barberry
  • Batch certificate published: 11,040 FU verified
  • Made in the USA · no proprietary blend
Small-batch production. Availability changes daily.
Check Availability →Direct from BlueOrganics · not sold on Amazon
60-day money-back guarantee
60-Day Money-Back GuaranteeTake it for 60 days. If it isn't for you, email your order number for a full refund. No forms, nothing to send back, keep the bottle.
The natural evidence

Japan Has a Third of Our Heart Disease

Japanese adults die of coronary heart disease at roughly a third of the American rate, despite decades of heavier smoking and far saltier diets. Something else is going on.

One of the biggest clues is natto. A 16-year study following 29,079 Japanese adults found those who ate it most often had around 25% lower cardiovascular mortality.13 And natto isn't eaten evenly across Japan: it's a daily habit in the east and north, and far less common in the west.

The Western
Pattern

Heart disease accepted as the price of getting older
Fibrin left to build up for decades, unchallenged
The event blamed on genetics, or on bad luck

The Japanese
Pattern

Roughly a third of the coronary death rate
A fibrinolytic enzyme eaten daily, for centuries
25% lower cardiovascular mortality in the highest natto eaters
60-day money-back guarantee

Our 60-Day Money-Back Guarantee

Take it properly for two months. If you don't feel the difference, that's reason enough.

Full refundEmail your order number and you're refunded in full.
Nothing to send backNo forms, no return shipping. Keep the bottle.
A real person answersReplies within the hour, seven days a week. Never a bot first.
Check Availability →Risk-free for 60 days

Frequently Asked Questions

Yes, and it's the reason CoQ10 is in the formula. Statins lower cholesterol through the same pathway your body uses to make CoQ10, and this puts it back. Let your prescriber know you're taking it.

Speak to your prescriber first. It contains vitamin K2, and warfarin patients are asked to keep vitamin K intake steady. The newer anticoagulants (Eliquis, Xarelto, Pradaxa) don't work through vitamin K.

No. Beetroot's pooled effect across 22 trials is about 3.55 mmHg systolic, rising to 5.31 in people already hypertensive. It's gentle by design. If you take blood pressure medication, keep monitoring as usual.

Different job. Fish oil works on some inflammatory markers. It does nothing for fibrin already built up in the artery wall, which is exactly what nattokinase breaks down.

Because 10,800 FU is the only dose with twelve months of human outcome data. The same study tested 3,600 FU and found no measurable effect, and nothing above 10,800 FU has been tested.

Beetroot works within two weeks for some people. Nattokinase reaches full activity around week three, and CoQ10 and berberine build over 8–12 weeks. Most people notice warmer hands and feet and lighter legs first.

Every active comes from food or plants: nattokinase from fermented soybeans, nitrates from beetroot, berberine from barberry, plus K2 and CoQ10. No proprietary blend, no fillers. It contains soy.

No. It isn't suitable during pregnancy, and you should stop well before any scheduled procedure. Tell your surgical team what you take.

Email your order number within 60 days and you're refunded in full. Nothing to ship back, and you keep the bottle.

Citations

  1. Yamamoto K, et al. Aging and plasminogen activator inhibitor-1 (PAI-1) regulation. Cardiovascular Research. 2005;66(2):276–285.
  2. Functional fibrinolysis in older adults: clinical relevance and implications for personalised anticoagulation. GeroScience. 2026.
  3. Geleijnse JM, et al. Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: The Rotterdam Study. J Nutr. 2004;134(11):3100–3105.
  4. ConsumerLab.com. Major Differences in Nattokinase Supplements. November 20, 2025.
  5. Bahadoran Z, et al. Beetroot juice and blood pressure: a systematic review and meta-analysis. Adv Nutr. 2017;8(6):830–838.
  6. Chen H, et al. Effective management of atherosclerosis progress and hyperlipidemia with nattokinase: a clinical study with 1,062 participants. Front Cardiovasc Med. 2022. PMC9441630.
  7. Link KP. The discovery of dicumarol and its sequels. Circulation. 1959;19:97–107.
  8. The mevalonate pathway and coenzyme Q10 biosynthesis. [Reference to be confirmed before publication.]
  9. Qu H, et al. The effect of statin treatment on circulating coenzyme Q10 concentrations: an updated meta-analysis of RCTs. Eur J Med Res. 2018;23(1):57.
  10. Marcoff L, Thompson PD. The role of coenzyme Q10 in statin-associated myopathy: a systematic review. JACC. 2007;49(23):2231–2237.
  11. Yin J, Xing H, Ye J. Efficacy of berberine in patients with type 2 diabetes mellitus. Metabolism. 2008;57(5):712–717.
  12. Sumi H, et al. A novel fibrinolytic enzyme (nattokinase) in the vegetable cheese Natto. Experientia. 1987;43(10):1110–1111.
  13. Nagata C, et al. Dietary soy and natto intake and cardiovascular disease mortality in Japanese adults: the Takayama Study. Am J Clin Nutr. 2017;105(2):426–431.
  14. Kim JY, et al. Effects of nattokinase on blood pressure: a randomized, controlled trial. Hypertens Res. 2008;31(8):1583–1588.
  15. Hsia CH, et al. Nattokinase decreases plasma levels of fibrinogen, factor VII and factor VIII in human subjects. Nutr Res. 2009;29(3):190–196.
  16. Hemostasis and ageing. PMC2602988.

This page is an advertisement and paid promotion for BlueOrganics. Optimal Health Review receives compensation from links on this page. The information on this site is not a substitute for professional medical advice. If you have, or suspect you may have, a medical condition, consult a health care provider, and never stop or change a prescribed medication without talking to your doctor. These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Rankings reflect our subjective scoring system and editorial opinion and do not necessarily reflect typical results. Contains soy and vitamin K2. Testimonials reflect individual experiences. Product names are trademarks of their respective owners and are used for comparison only.

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