Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Research Backed Dosage
Reduction In Arterial Plaque
Reduction In Arterial Plaque
3rd Party Lab Tested
3rd Party Lab Tested
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase
Clinical-Grade 10,800 FU Nattokinase

4.9/5

(1,422+ reviews)

Clinical-grade 10,800 FU Nattokinase

6.2g per sachet / 30 Servings
  • Proven 36.6% Arterial Plaque Reduction
  • Support Healthy Blood Flow & Arterial Function
  • 6x More Potent Than Your Body's Natural Enzymes
  • Clinical-Grade 10,800 FU Dose
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"In a 26-week clinical trial comparing nattokinase to a standard statin (simvastatin): Nattokinase (10,800 FU/day): Reduced carotid plaque size by 36.6%. Simvastatin (Statins): Reduced plaque size by only 11.5%. Key Expert Takeaway: "Daily nattokinase supplementation effectively reduces carotid atherosclerosis progression and may be a better alternative to statins.""
Effective management of atherosclerosis progress and hyperlipidemia with nattokinase
A clinical study with 1062 participants
10,800 FU
5,000 FU
Arterial Plaque Effect
Unlike standard supplements that show "null effects" on existing buildup, our 10,800 FU protocol was shown in clinical trials to reduce carotid plaque size by a staggering 36.6%
Atherosclerosis Suppression
a 95.4% improvement rate in suppressing the progression of atherosclerosis a level of efficacy standard retail doses simply cannot reach
Vascular Remodeling (IMT)
We target the biological age of your arteries by inducing a 22.2% reduction in Intima-Media Thickness (IMT), physically thinning the arterial wall back toward its youthful state.
Lipid Management
Our formula doesn't just block cholesterol; it creates a balanced lipid environment by significantly lowering LDL and triglycerides while simultaneously supporting "good" HDL levels.
Tab 3 image
Premium quality materials
Easy to use
Fast results
Great value
Satisfaction guaranteed
  • Improved Sleep
  • Reduced Stress
  • Enhanced Focus
  • Better Mood
  • Increased Energy

Meet Nattokinase By The Numbers

In a 12-month clinical study of 1,062 participants , a daily dose of 10,800 FU of nattokinase combined with 180mcg of Vitamin K2 led to remarkable cardiovascular benefits, including:
39%

Improvement in coronary plaque health

measured by coronary plaque score
25%

Improvement in carotid artery flexibility

measured by CCA-IMT
17%

Reduction in total cholesterol

16%

Reduction in triglycerides

The 6-month restoration protocol

Month 1

Circulation & Immune Kickstart

In the first few weeks, nattokinase may start supporting healthy blood flow. Many users feel warmer extremities and subtle support of energy levels.

Beta glucan may also begin balancing healthy immune response, often leading to an overall feeling of resilience.

After 2 Months

Heart, Gut & Bone Health Take Root

Some clinical studies on nattokinase have shown support for healthy blood pressure levels in as little as 8 weeks.

Additionally, beta glucan may begin promoting microbiome balance, while vitamin K2 may start supporting proper calcium metabolism.*

After 3 Months

Deeper Cardiovascular Support

Many people experience continued support for blood pressure and balanced blood clotting factors. Around 3 months, vitamin K2 may begin to support markers associated with the health and elasticity of arteries*

6 Months And Beyond

Long-Term Protection & Vitality

Ongoing use can support arterial flexibility, blood pressure levels, bone health, balanced immunity, and an overall sense of wellness.*

Rated 4.8/5 based on +10,839 Total Ratings

See what our customers are saying

Review by Michael
Michael, 68 Verified Buyer
Been tracking my blood pressure at home for years and it was always hovering around 145/92 even on meds. My calcium score from last year was 287 which my cardiologist said was "moderate" but concerning. Started taking this in January and by March my home readings were consistently in the 118/66 range. Just got my labs done and my doctor actually commented that my numbers looked better. Can't get another calcium scan until next year but if my BP improvement is any indication, something's working.
Review by Robert T.
Robert T., 52 Verified Buyer
My legs felt so heavy by afternoon I could barely walk my dog. Stairs were brutal. Doctor mentioned arterial stiffness but just wanted to add another pill. Tried this instead and within a month the heavy feeling started going away. Now at 3 months I'm walking the dog twice a day no problem. Even my blood pressure came down. Really glad I found this.
Review by Sarah
Sarah, 58 Verified Buyer
My feet have been freezing for years. Like ice blocks even with thick socks. Doctor said just circulation from getting older. Been taking this for about 2 months and honestly my feet feel warm again. I can't believe it. Such a simple thing but when you've had cold feet for 5 years it's huge. Sleeping better too

THE KEY INGREDIENTS

Nattokinase

Nattokinase

Known for its potent ability to support healthy blood flow and promote vibrant circulation

Vitamin K2 (MK-7)

Vitamin K2 (MK-7)

Plays a vital role in heart and bone health. It helps direct calcium to where it’s needed your bones and teeth while helping prevent it from accumulating in the arteries

Beta Glucan from Organic Oat Bran

Beta Glucan from Organic Oat Bran

Daily supplementation with beta glucan may support a healthy immune system, balanced blood sugar levels and promote digestive health

Nattokinase

Nattokinase

Known for its potent ability to support healthy blood flow and promote vibrant circulation

Vitamin K2 (MK-7)

Vitamin K2 (MK-7)

Plays a vital role in heart and bone health. It helps direct calcium to where it’s needed your bones and teeth while helping prevent it from accumulating in the arteries

Beta Glucan from Organic Oat Bran

Beta Glucan from Organic Oat Bran

Daily supplementation with beta glucan may support a healthy immune system, balanced blood sugar levels and promote digestive health

Clinically Studied Benefits of Nattokinase

Supports Healthy Blood Flow & Circulation

Supports Healthy Blood Flow & Circulation

Nattokinase is a fibrinolytic enzyme studied for its ability to break down excess fibrin — a protein that can accumulate in blood vessels and contribute to restricted circulation.

Helps Maintain Healthy Blood Pressure

Helps Maintain Healthy Blood Pressure

Clinical research suggests nattokinase supports vascular relaxation and healthy blood viscosity, helping maintain normal blood pressure already within a healthy range.

Warmth in Hands and Feet

Warmth in Hands and Feet

By supporting smoother peripheral circulation, nattokinase helps improve oxygen delivery to extremities often affected by sluggish blood flow.

Mental Clarity & Sharpness

Mental Clarity & Sharpness

Healthy cerebral circulation is essential for brain performance. Nattokinase supports efficient blood flow to help maintain focus, memory, and mental sharpness.

Clinical-Grade 10,800 FU Nattokinase
Excellent 4.9 | 1,422

Clinical-Grade 10,800 FU Nattokinase

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Get It By

The Truth About Heart Disease

Heart disease can often start with endothelial damage—the breakdown of the thin lining inside our blood vessels. This damage can often be driven by metabolic dysfunction, oxidative stress, and chronic inflammation from poor diets, sedentary habits, environmental factors and more.*

Kiva supports a healthy endothelial lining by promoting clear, efficient blood flow—delivering vital nutrients to your heart and organs, and helping your body remove metabolic waste for sustained vitality.

Image with text

Introducing ancient Nattokinase

Nattokinase is an enzyme derived from natto, a fermented soybean dish, which has been a staple in Japan for over a thousand years.While cardiovascular disease is the leading cause of death in most developed nations, Japan and South Korea stand out with lower rates. Their diets, rich in fermented foods like natto and kimchi, may contribute to better heart health by improving blood flow and reducing clot formation​.Discovered in the 1980s by Dr. Hiroyuki Sumi for its potent ability to break down blood clots, it works by targeting fibrin—the key protein involved in clot formation.

🇯🇵 100% Nattokinase From Japan

The Chiba prefecture became famous for natto production because its warm, humid climate was ideal for fermentation

JOIN THOUSANDS OF OTHERS IN THEIR journey

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Rated 4.8/5 by 1,319+ Happy Customers

"Best Natto I ever had"

Excellent 4.9/5 | 1,422+ reviews

My feet aren’t ice blocks anymore

I used to joke that my feet were permanently frozen. Even in bed with socks and a blanket they felt cold from the inside out. After about two months on this, I realized I wasn’t layering socks at night anymore. It’s such a small thing, but it’s honestly made winters way more comfortable. I didn’t expect to actually feel a difference like this.

L
Linda M. Verified customer

I tried nattokinase before and felt nothing

I bought a cheaper nattokinase supplement a few years ago and gave up because nothing changed. This time has been different. Around week 8–9 my legs didn’t feel as heavy when walking uphill, and I wasn’t crashing mid-afternoon like before. The higher dose clearly makes a difference.

R
Robert K. Verified customer

Worth It!

I originally bought this for heart health, but the biggest change has been mental clarity. I was starting to feel slower when speaking and would lose my train of thought more often. After a couple months, I feel sharper and more “on.” My husband even noticed before I mentioned it.

J
James M. Verified customer

Taste Amazing

I’ve tried a few brands, but most are too bitter or processed. This Natto has a refined, woody flavor with a hint of sweet

L
Liam B. Verified customer

10,800 FU vs. market dosing

Most nattokinase supplements provide small “maintenance” amounts that is only placebo. Kiva delivers the full 10,800 FU clinical-level dose used in research the level associated with meaningful support for healthy circulation, blood flow, and vascular function.

10,800 FU vs. market dosing

Most nattokinase supplements provide small “maintenance” amounts that is only placebo. Kiva delivers the full 10,800 FU clinical-level dose used in research the level associated with meaningful support for healthy circulation, blood flow, and vascular function.

Kiva
others
Increase Blood Flow
Antioxidant Powerhouse
Clears Artery Plaque
Supports Focus
Boosts Energy
No Heavy Metals

ONLY ONE SACHET A DAY

Turn nattokinase into a simple daily ritual for long-term vascular health

Add to Your Drink

Add to Your Drink

Pour one sachet into coffee, tea, juice, or water and mix.

Stir & Blend

Stir & Blend

Stir slowly or blend until smooth and velvety.

Your Daily Routine

Your Daily Routine

Use every morning to consistently support circulation and vascular health.

Add to Your Drink

Add to Your Drink

Pour one sachet into coffee, tea, juice, or water and mix.

Stir & Blend

Stir & Blend

Stir slowly or blend until smooth and velvety.

Your Daily Routine

Your Daily Routine

Use every morning to consistently support circulation and vascular health.

30-day satisfaction Guaranteed

We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.

TRY IT NOW RISK FREE
100% Satisfaction
Fast Shipping
Easy Returns

30-day satisfaction Guaranteed

We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.

TRY IT NOW RISK FREE
100% Satisfaction
Fast Shipping
Easy Returns

Frequently Asked Questions

We offer a 30-day money back guarantee.

What makes 10,800 FU different from other nattokinase supplements? +

Most nattokinase supplements use small “maintenance” doses. Our formula provides 10,800 FU per serving — a high-potency dose designed for people who want meaningful support for circulation and vascular health, not just basic heart support.

what exactly is nattokinase? +

Nattokinase is a natural enzyme discovered in a traditional Japanese food called natto, which is fermented soybeans. For hundreds of years, natto has been associated with heart and longevity benefits in Japan.


Scientists later isolated the specific enzyme responsible for these effects and named it nattokinase. Today, it’s widely studied for its ability to support healthy blood flow, circulation, and overall cardiovascular wellness.


Think of it as a daily circulation-support enzyme you can easily add to your routine.

When should I take it? +

Most customers take one sachet in the morning with their first drink of the day. Consistency matters more than timing.

How long until I notice results? +

Everyone is different, but most customers report noticeable changes after 4–8 weeks of consistent daily use. This is a long-term wellness supplement designed to support your body over time.

Can I take this with other supplements? +

Nattokinase is commonly taken alongside other wellness supplements. If you are taking prescription medication or blood thinners, consult your healthcare professional before use.

Is it safe for long-term use? +

Nattokinase has been consumed for decades as part of traditional diets and is widely used as a daily wellness supplement.

what exactly is nattokinase? +

Nattokinase is a natural enzyme discovered in a traditional Japanese food called natto, which is fermented soybeans. For hundreds of years, natto has been associated with heart and longevity benefits in Japan.


Scientists later isolated the specific enzyme responsible for these effects and named it nattokinase. Today, it’s widely studied for its ability to support healthy blood flow, circulation, and overall cardiovascular wellness.


Think of it as a daily circulation-support enzyme you can easily add to your routine.

How long until I notice results? +

Everyone is different, but most customers report noticeable changes after 4–8 weeks of consistent daily use. This is a long-term wellness supplement designed to support your body over time.

Is it safe for long-term use? +

Nattokinase has been consumed for decades as part of traditional diets and is widely used as a daily wellness supplement.