Holtmore Nattokinase is marketed as an advanced cardiovascular supplement that claims to support circulation, reduce artery plaque, and help maintain healthy blood pressure and cholesterol levels. Its biggest selling point is a high-strength formula containing 10,000 FU of nattokinase per capsule.
But does the science actually support these claims? Is Holtmore a legitimate supplement, or is its marketing making promises that go beyond the available evidence?
We examined Holtmore’s official product page, ingredient information, pricing, subscription terms, and published nattokinase research to help consumers make a more informed decision.
What Is Holtmore Nattokinase?
Holtmore Nattokinase is an eight-ingredient dietary supplement marketed for cardiovascular health. Its primary ingredient is nattokinase, an enzyme produced through the fermentation of soybeans used to make a traditional Japanese food called natto.
The company promotes its product as a high-strength formula designed to support healthy circulation and cardiovascular function. It also makes claims about breaking down fibrin, reducing artery plaque, and improving blood pressure and cholesterol.
According to the official product page, each bottle contains 90 vegetarian capsules. The company states that one capsule provides 500 mg of nattokinase, equivalent to 10,000 FU (fibrinolytic units).
Holtmore also advertises third-party laboratory testing, manufacturing in the USA, and a 90-day money-back guarantee.
However, it is important to distinguish between the manufacturer’s claims and benefits that have been independently established through clinical research.
Holtmore Nattokinase Ingredients
The product is advertised as an eight-ingredient cardiovascular formula.
Here is the ingredient information published on Holtmore’s website:
| Ingredient | Amount listed |
|---|---|
| Nattokinase | 500 mg (10,000 FU) |
| CoQ10 | Included in 500 mg heart blend |
| Turmeric root | Included in heart blend |
| Dandelion root | Included in heart blend |
| Aged garlic | Included in heart blend |
| Grape seed | Included in heart blend |
| Bromelain | 10 mg |
| Pine bark | 5 mg |
The company lists the combined heart blend containing CoQ10, turmeric, dandelion, aged garlic, and grape seed as 500 mg. However, it does not separately disclose the quantity of each of those five ingredients in the product information reviewed.
This is worth considering because the amount of an ingredient can affect how useful the research on that ingredient is when evaluating a finished supplement.
A formula containing several ingredients is not automatically more effective than a simpler product. The actual amounts, quality, safety, and clinical evidence all matter.
Does Holtmore Really Contain 10,000 FU of Nattokinase?
Holtmore’s main selling point is its advertised 10,000 FU dose.
FU measures the fibrinolytic activity of nattokinase. It is not simply a measurement of the ingredient’s weight. The company says an outside laboratory measured its product at 10,400 FU, compared with the 10,000 FU stated on the label.
This is a useful claim to investigate, but a laboratory result should be evaluated carefully.
Holtmore provides a link to a laboratory report on its website. Consumers should check the actual report for the laboratory’s identity, test date, product batch, testing method, and measured activity.
Even if the stated activity is accurate, a higher FU number does not automatically establish that a supplement is more effective or safer. There is no universal rule that everyone should take 10,000 FU daily.
The dose used in a particular research study also should not be treated as a recommended dose for every individual.
Does Nattokinase Really Reduce Artery Plaque by 36%?
One of Holtmore’s strongest marketing claims is that nattokinase reduced artery plaque by 36% in a 12-month study involving 1,062 participants.
The company references a real research paper published in Frontiers in Cardiovascular Medicine in 2022.
The study, titled “Effective management of atherosclerosis progress and hyperlipidemia with nattokinase,” examined changes in cholesterol measurements and carotid artery findings among participants who used nattokinase.
The researchers reported a reduction in the measured carotid plaque size after 12 months.
However, there are important limitations.
First, the study was a retrospective analysis of participant records. It was not a large randomized, placebo-controlled clinical trial.
Second, the participants generally received 10,800 FU of nattokinase daily. That is not exactly the same dose as Holtmore’s advertised 10,000 FU.
Third, the study evaluated nattokinase tablets from another manufacturer. It did not test Holtmore’s eight-ingredient formula.
Therefore, the 36% figure should not be interpreted as proof that taking Holtmore will reduce an individual’s artery plaque by 36%.
The study is relevant research, but more rigorous clinical trials are needed before nattokinase can be considered a proven treatment for atherosclerosis.
Can Holtmore Replace Statins or Blood Pressure Medication?
No. Holtmore should not be considered a replacement for prescribed cardiovascular medication.
Its marketing uses phrases such as “Clear arteries. No statin” and suggests that nattokinase works differently from statins. This may create the impression that people can avoid prescription cholesterol medication by taking the supplement.
That conclusion is not supported by the available evidence.
Statins are prescribed to reduce LDL cholesterol and cardiovascular risk in people who need them. Nattokinase has been investigated for possible effects on fibrin breakdown, blood pressure, and other cardiovascular markers, but it has not been established as a substitute for statins.
The same applies to blood pressure medication and anticoagulants.
Anyone currently taking prescribed medication should consult a qualified healthcare professional before considering nattokinase. Never stop or reduce a prescribed treatment based on a supplement advertisement.
Is Holtmore Nattokinase Safe?
Safety is an important consideration because nattokinase may affect blood clotting.
Memorial Sloan Kettering Cancer Center explains that nattokinase may increase bleeding risk when combined with blood-thinning medication.
People taking anticoagulants or antiplatelet medicines should be particularly cautious. This includes people using medications such as warfarin and those taking aspirin regularly.
There are also published case reports involving serious bleeding events and complications associated with nattokinase use. Case reports do not tell us how frequently such events occur, but they show why the ingredient should not automatically be considered harmless simply because it is marketed as natural.
People with bleeding disorders, a history of deep vein thrombosis, or an upcoming operation should seek medical advice before using it.
Holtmore’s own website includes reassuring language about using the supplement alongside certain medications. However, general marketing statements should not replace individualized medical advice.
Our advice: Discuss nattokinase with your doctor or pharmacist before taking it, particularly if you have a medical condition or use prescription medication.
Holtmore Price and Subscription Details
Holtmore offers several purchasing options through its official website. During our review, the product page displayed these promotional offers:
| Offer | Advertised price |
|---|---|
| One bottle | $28.95 |
| Buy 1, Get 1 Free | $28.95 |
| Buy 2, Get 2 Free | $47.95 |
The website also displays a separate one-time purchase option at $71.95 for the four-bottle order. Prices and promotional offers can change, so check the final checkout amount before placing an order.
Important: Check the refill arrangement.
Holtmore advertises refills every 28 days at $45.95 per bottle. The website says customers can cancel or skip a refill through its subscription management page or by contacting support.
The checkout options distinguish between one-time purchases and recurring orders. Make sure you select the purchase type you actually want.
If you do not want recurring charges, verify that the order is marked as a one-time purchase before submitting payment.
Is Holtmore a Legitimate Company?
Holtmore operates an online store at Holtmore.com and provides product information, contact details, purchasing options, and a refund guarantee.
Its website identifies the seller as GreiferProductions LTD, trading under the name Holtmore. It also states that payments are processed through Whop.
The company claims that its product is made in the USA, manufactured in a cGMP facility, and tested by an outside laboratory.
These are claims made by the seller. They should not be confused with independent confirmation of the product’s effectiveness.
The website displays a 4.8-star rating and more than 1,100 reviews, along with a claim of over 90,000 customers. However, we could not independently verify those customer figures or establish that the testimonials and reported health improvements were independently audited.
This does not prove that the reviews are fake. It simply means shoppers should not treat seller-hosted testimonials as clinical evidence.
The FDA also does not approve dietary supplements for safety and effectiveness before they are marketed. Manufacturers and distributors are responsible for ensuring that their products meet applicable requirements.
Consequently, a statement such as “third-party tested” or “made in the USA” does not mean the FDA has approved the product or confirmed its cardiovascular benefits.
Final Verdict: Should You Buy Holtmore Nattokinase?
Holtmore Nattokinase is a real product being sold through an identifiable online storefront. Its advertised formula includes 10,000 FU of nattokinase along with seven additional ingredients, and the company provides a link to its claimed laboratory testing.
However, its marketing makes stronger health promises than the available evidence can establish.
The 2022 study involving 1,062 participants is genuine research, but it was retrospective and did not test Holtmore’s finished product. It cannot prove that this particular supplement clears blocked arteries, reduces plaque by 36%, or replaces statins.
The possible bleeding risk also deserves serious attention, especially for people taking blood-thinning medication.
There are practical purchasing considerations too. Promotional prices can be tied to different order options, and recurring refills cost $45.95 every 28 days.
Our verdict: Approach Holtmore with caution. We cannot conclude that it is a scam based on the information reviewed, but we also cannot independently verify its customer claims or establish that its product delivers the advertised cardiovascular results.
If you are considering buying it, review the laboratory report, check the exact checkout option, understand the refund and refill terms, and consult your healthcare professional before taking nattokinase.
Frequently Asked Questions
Is Holtmore Nattokinase legit?
Holtmore operates an online store and identifies GreiferProductions LTD as the seller. However, its advertised health benefits and customer figures have not been independently established by the evidence reviewed.
Does Holtmore contain 10,000 FU of nattokinase?
Holtmore advertises 10,000 FU per capsule and claims an outside laboratory measured 10,400 FU. Consumers can review the laboratory report linked on the company’s product page, but should check its testing details and batch information.
Can Holtmore dissolve artery plaque?
There is no independent clinical evidence establishing that Holtmore’s finished formula dissolves artery plaque. The company references a 2022 study of nattokinase, but that study did not test Holtmore.
Can nattokinase replace statins?
No. Nattokinase has not been established as a replacement for statins or other prescribed cardiovascular medications. Do not stop prescribed treatment without medical advice.
Is Holtmore safe to take with blood thinners?
Nattokinase may increase bleeding risk when combined with blood-thinning medication. Consult your doctor or pharmacist before using it, especially if you take aspirin, warfarin, or another anticoagulant.
Does Holtmore offer a money-back guarantee?
The company advertises a 90-day money-back guarantee. Read the current refund policy and keep your order confirmation so you understand the applicable conditions.
Does Holtmore have a subscription?
The company advertises refills every 28 days at $45.95 per bottle. It also displays one-time purchase options. Check your selected option carefully before completing checkout.
Where can I buy Holtmore Nattokinase?
Holtmore says the supplement is sold through its official website, Holtmore.com. The company states that it is not sold through Amazon or physical retail stores.
Nikhil Sharma is the author and researcher behind Review Trails, where he shares shopping website reviews, product insights, and scam or legit website analysis. He focuses on providing honest, easy-to-understand information that helps readers make safer and smarter online purchasing decisions.