Two vegetarian capsules a day deliver 10,000 FU of nattokinase, the enzyme made when soybeans are fermented into natto, plus CoQ10 and four supporting nutrients for healthy circulation and normal blood flow.*
Nattokinase Heart Complex 10,000 FU
10,000 FU
Nattokinase Activity
100 mg CoQ10
Heart Energy Support
2 Capsules
No Natto Taste
30 Day Money-Back Guarantee
Two capsules a day. One bottle is a 30-day supply.
Check the FU on the label.
Many nattokinase labels list milligrams only. Ours states 10,000 FU of enzyme activity per serving.
QUICK QUESTIONS
In Japan it is breakfast. Here it is two capsules.
Natto, fermented soybeans, has been eaten in Japan for generations and is rarely found on an American plate. That fermentation produces nattokinase, an enzyme studied for its role in supporting healthy circulation. Hyams delivers a quantified 10,000 FU serving with CoQ10 and four supporting nutrients, without the strong smell or sticky texture of natto.*
Natto's key enzyme, measured and easy to take
What is in every serving
Support Natural Fibrin Balance
Nattokinase provides targeted enzyme activity to support the body’s natural fibrin-management processes and help maintain smooth, everyday circulation.
Get 10,000 FU of Enzyme Activity
Each serving delivers 10,000 FU, giving you a clear measure of active enzyme strength and a high-potency foundation for daily circulatory support
Help Keep Blood Flowing Smoothly
By supporting normal circulation, nattokinase helps maintain whole-body cardiovascular function and gives your system the daily support it needs to keep moving.
Heart Support Daily Habit
This concentrated nattokinase formula makes it easy to add targeted circulation support to your routine, one simple serving designed to support healthy blood flow and heart function over time.
Support Natural Fibrin Balance
Nattokinase provides targeted enzyme activity to support the body’s natural fibrin-management processes and help maintain smooth, everyday circulation.
Get 10,000 FU of Enzyme Activity
Each serving delivers 10,000 FU, giving you a clear measure of active enzyme strength and a high-potency foundation for daily circulatory support
Help Keep Blood Flowing Smoothly
By supporting normal circulation, nattokinase helps maintain whole-body cardiovascular function and gives your system the daily support it needs to keep moving.
Heart Support Daily Habit
This concentrated nattokinase formula makes it easy to add targeted circulation support to your routine, one simple serving designed to support healthy blood flow and heart function over time.
Where Nattokinase Goes to Work
One daily serving, two areas of support
Your circulatory system carries oxygen and nutrients throughout your body every minute of the day. Nattokinase provides measured enzyme activity that helps support normal blood-flow function and the body’s natural fibrin balance; two important parts of maintaining smooth, healthy circulation.
Healthy circulation is the foundation of everyday cardiovascular wellness. By supporting normal blood flow, nattokinase complements heart-conscious habits like balanced nutrition and regular movement, giving your daily routine focused support from one concentrated serving.*
Your First 30 Days
What the routine looks like. We don't promise a date for results: everyday circulation support is not something most people feel switch on.
DAY 1
Start the Routine
Take two capsules with water as directed. No preparation, refrigeration, strong smell, or sticky natto texture.
WEEK 1
Build the Habit
Take it at the same time each day, morning or before bed. Pairing it with something you already do makes it stick.
DAY 30
Consistency Becomes Easy
A full month turns the two-capsule serving into an automatic part of your daily wellness routine. Your refill arrives right on time.
ONGOING
Support for the Long Term
Continue consistently as part of a balanced lifestyle focused on movement, nutritious food, sleep, and regular medical care.
What Our Customers Are saying...
Easy to Stick With
Been using this for about a month and it’s easy to stay consistent with. No weird taste, no complicated routine. I also like that the 10,000 FU strength is right on the label.
The FU Number Sold Me
I compared a lot of nattokinase before choosing this one. The clearly listed 10,000 FU made the decision easy. Bottle arrived sealed and everything looked good.
Part of My Morning Routine
I take it as directed with the rest of my morning supplements. It’s simple, easy to remember, and hasn’t bothered my stomach. Already ordered another bottle.
A Simple Add-On
I already walk every day and try to eat well. This was an easy addition to that routine. I like the straightforward formula and clear labeling.
No Fuss
Easy bottle, manageable capsules, and no aftertaste for me. Exactly what I wanted from a daily nattokinase supplement.
Good for Travel
Took this on two work trips and never fell out of my routine. The bottle packs easily and the directions are simple.
One Month In
No dramatic overnight change, which I didn’t expect. I do like how easy it is to take and how clearly the enzyme activity is listed. I’m continuing with it.
Would Buy Again
Straightforward nattokinase, clear 10,000 FU strength, and easy to use every day. I’d buy it again.
Money-Back Guarantee
Take it as directed for 30 days. If you are not glad you started, email support@hyams.store and we will refund you. No forms to fill in and nothing to send back.
ADD TO CART
100% Satisfaction
Fast Shipping
Easy Returns
Money-Back Guarantee
Take it as directed for 30 days. If you are not glad you started, email support@hyams.store and we will refund you. No forms to fill in and nothing to send back.
ADD TO CART
100% Satisfaction
Fast Shipping
Easy Returns
Frequently Asked Questions
If your question is not here, email support@hyams.store. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
What is nattokinase, and what does FU measure?
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Nattokinase is an enzyme produced when soybeans are fermented into natto, a traditional Japanese food. FU is the unit used to measure that enzyme's activity. Milligrams tell you how much material is in a capsule; FU tells you how active the enzyme is, which is why we print it on the label.
Will it taste or smell like natto?
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No. Natto is known for a strong aroma and sticky strands. This is two small capsules taken with water. No smell, no texture, no refrigeration, no preparation.
Does it contain vitamin K2?
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No. Whole natto naturally contains vitamin K2 as MK-7. This formula does not; it is built around the nattokinase activity. If K2 is what you are looking for, natto itself or a dedicated K2 product is the better fit.
Is it vegetarian, and does it contain allergens?
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The capsule is vegetable cellulose, and the other ingredients are rice flour and magnesium stearate, so it is suitable for vegetarians and vegans. The nattokinase comes from non-GMO fermented soy, so the product contains soy.
Can I take it with blood thinners or heart medication?
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Ask your healthcare professional before use if you take blood-thinning, blood-pressure, or cardiovascular medication, have a bleeding disorder, or are preparing for surgery.
How soon will I notice results?
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We are not going to give you a timeline. Everyday circulation support is not something most people feel switch on, and any brand that promises a date is guessing. The serving is built for daily use, the refill arrives every 30 days, and the 30-day guarantee lets you decide for yourself.
Heart health starts with daily habits
Real reviews from verified buyers
E
Elaine V.
- Easy to Stay Consistent
Reviewed
in the
United States
on
January 29, 2026
I’ve tried supplements that were too complicated to keep up with. This one is simple. I take it as directed, the capsules are easy enough for me, and there’s no noticeable aftertaste. The 10,000 FU is clearly marked, which I appreciate. Just started my second bottle.
37
people found this helpful
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M
Marcus H.
- Clear Label, No Guessing
Reviewed
in the
United States
on
January 10, 2026
The FU amount was the main reason I chose this brand. A lot of products list a big milligram number but make the actual enzyme activity hard to find. This one says 10,000 FU clearly. It arrived sealed and has been easy to add to my routine.
84
people found this helpful
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P
Priya D.
- Exactly What I Wanted
Reviewed
in the
United States
on
December 18, 2025
Nothing fancy, just a straightforward nattokinase supplement that’s easy to take. I’ve had no stomach issues or weird taste. So far, so good.
29
people found this helpful
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T
Tom B.
- Fits My Routine
Reviewed
in the
United States
on
November 8, 2025
I’m already pretty focused on walking, eating better, and keeping up with regular checkups. I wanted nattokinase as one more part of that routine. This has been easy to use and the label is refreshingly clear. I’ll keep taking it.
53
people found this helpful
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R
Renee K.
- Ordering Again
Reviewed
in the
United States
on
October 16, 2025
Finished the first bottle and decided to reorder. I like the clear 10,000 FU strength, simple directions, and the fact that it travels well. It’s one of the few supplements I haven’t forgotten to take.
18
people found this helpful
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