10 Reasons People Are Swapping A Drawer Of Heart Supplements For One 10,800 FU Nattokinase Formula In 2026 (And Why You Might Too)

For more than a thousand years, people in Japan have eaten natto: soybeans fermented with Bacillus subtilis natto.

In 1980, Japanese researcher Dr. Hiroyuki Sumi found a remarkable enzyme inside this sticky, strong-smelling food.

He named it nattokinase.

Japan is known for some of the longest life expectancies on Earth, and researchers have spent decades studying traditional foods like natto as part of that story.

There’s just one problem: most people can’t stand eating it.

Your blood has to stay smooth and moving to reach every cell, from your heart to your fingertips.

Your body makes a protein called fibrin, and it has its own system for clearing it away when it’s no longer needed.

Nattokinase is a fibrinolytic enzyme: it supports that natural clearing process.

That’s why it’s known for supporting healthy blood flow and cardiovascular health.

And there’s one place people often notice the difference first.

Nattokinase isn’t measured in milligrams.

It’s measured in FU (fibrinolytic units), which tells you how active the enzyme is.

Here’s the problem: many nattokinase supplements contain only 2,000–4,000 FU per serving.

So what should you look for on the label?

Your heart beats about 100,000 times a day, and its cells need a constant supply of energy.

CoQ10 plays a key role in cellular energy production, and your body’s own levels tend to decline with age.

Instead of a separate bottle, it comes in the same daily serving as the 10,800 FU nattokinase.

And CoQ10 isn’t the only co-nutrient working alongside it.

Popular supplements attract cheap copies, so quality matters.

Every batch of Irmi® Nattokinase is third-party lab tested for potency and purity.

It’s made in a certified cGMP facility, with Non-GMO ingredients in vegetarian capsules.

What’s on the label is what’s in the bottle.

And you don’t have to take our word for any of it.