Most Americans are concerned about poor circulation and blood clots which can affect overall cardiovascular wellness. Nattokinase is a natural enzyme extracted from natto, which is a traditional Japanese food made from fermented soybeans. It has been studied for its ability to break down fibrin and support healthy blood flow.
It may be surprising, but supplements containing Nattokinase have been shown to offer real cardiovascular benefits. Fibrin accumulation is one of the key contributors to poor circulation and clot formation. Nattokinase helps break down this excess fibrin, promoting smoother, more efficient blood flow. Additionally, research suggests it may help support normal blood pressure levels by promoting better circulation and arterial flexibility.
From our research, we’ve come to the conclusion that supplements for cardiovascular health can work wonders, given a top quality product that contains the most effective source of clinically-proven ingredients. Many ingredients have been studied in clinical trials where they have demonstrated positive benefits of Nattokinase.
We understand your hesitation - we were skeptical too. There are so many supplements that claim to support heart health but deliver disappointing results. Nattokinase supplements really can help - if you choose a formula backed by science and quality manufacturing.
A high-quality supplement will contain a standardized dose of Nattokinase (usually measured in FU or fibrinolytic units) that matches the amounts used in clinical studies. Most offer either 2000 or 4000 FU, and the dosage you need will depend on your health goals. For general circulatory support, 2,000 FU is the typical dosage whereas individuals with known circulation issues will likely be advised by their healthcare provider to take 4,000 FU.
It's also important to look for a supplement without any Vitamin K2 as this reduces the risk of interactions with blood-thinning medications. Lastly, check for a bioavailability enhancer such as piperine or even BioPerine®, which is a patented black pepper extract known to enhance nutrient absorption.
When you see a company that’s only selling a Nattokinase supplement and using some hot marketing word in the name, you’re going to want to steer clear. They're often trying to ensnare you with their marketing but have only a low quality product to offer.
If you want to try out this promising supplement, check out our reviews of Nattokinase supplements, where we analyzed the ingredients, company reputation, customer reviews, and more to help our readers find the supplements that don’t mess around.
Our research shows that Nattokinase can be a powerful way to support circulation, heart health, and overall vascular function. The most important factor is choosing a supplement with a clinically effective dose of pure Nattokinase. A quality product should provide 2,000 FU (fibrinolytic units) per capsule, with a recommended daily serving of 2 capsules. This helps to maintain sustained effects around the clock and give you the flexibility to take either 2,000 or 4,000 FU depending on your needs. It should also be free of Vitamin K2, which is naturally found in natto (the fermented soybean dish where Nattokinase comes from), to avoid unwanted interactions. For better absorption, look for a formula that includes a bioavailability enhancer like Piperine, ideally in the form of BioPerine®.
If you want to try a powerful, research-backed Nattokinase supplement, then Research Verified should be your first choice. It contains the ideal dosage of 4000 FU per daily serving, conveniently split into 2 capsules. It doesn’t have any Vitamin K2 but it does contain BioPerine® to boost nutrient absorption.
Research Verified clearly has a commitment to quality and guarantees its supplements are made in an FDA-registered laboratory that is cGMP certified. Their product contains top-quality ingredients to deliver essential nutrients to the body.
Their reputation is top notch. They’re an established company that offers excellent customer service, safe checkout and on-time delivery. Furthermore, they have several third-party monitoring services, including buySAFE, Norton, and Trustee, as well as an A+ rating from the quality monitoring company QualityTrusted.
All purchases of Research Verified Nattokinase are backed by a 365-Day Risk-Free 100% Money-Back Guarantee (when buying from an authorized seller). That is the best guarantee that we have seen from any manufacturer. This 1-year guarantee shows how confident Research Verified is in the effectiveness of their Nattokinase product.
So, if you’re looking for the best Nattokinase supplement available from a reputable company with a rock solid 365-day money-back guarantee, we’d say this is the product to try.
The only issue with Research Verified is that due to the high demand they are often sold out. To avoid having to put yourself on a waiting list, take advantage of the benefits while they’re still in stock.
Klair Labs Nattokinase NSK-SD Klaire Labs, now transitioning to the SFI Health brand, offers a Nattokinase supplement that delivers a solid dose of 4,000 FU per day using the clinically studied and patented NSK-SD®. This formula is split into two capsules for flexible dosing and has earned high customer ratings. While it meets many of the criteria we look for, including being GMP-certified and free from Vitamin K2, it lacks BioPerine® for enhanced absorption and only comes with a 30-day refund policy. Additionally, a past recall from the brand raises some concerns about product testing transparency.
Allergy Research Group brings over four decades of industry experience to its Nattokinase supplement, which contains the well-researched NSK-SD® at a daily dose of 4,000 FU. It comes with a 60-day satisfaction guarantee and delivers a comparable dosage. However, it differs in several ways that could impact its value. The formula comes in softgels, introducing extra ingredients not typically found in capsules, and it lacks BioPerine® to aid absorption. While the company advertises the Nattokinase as vegan-derived, the product itself includes animal-derived ingredients and is not suitable for vegans. Despite some user-reported side effects, most reviews are positive, suggesting it works well for many people.
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