Nattokinase vs Natto: Benefits, Key Differences, and How to Take It Safely in the UK
A simple guide to natto and nattokinase, explaining the difference, key benefits, and which option may suit you best for heart and overall health.

If you've been looking into natural ways to support your heart health or circulation, you've probably come across two words that sound similar but aren't quite the same thing — natto and nattokinase.
They're related. They come from the same place. But they work a little differently, and understanding that difference helps you make a better decision about what's right for you.
Let's clear it up properly.
What is Japanese natto?
Natto is a traditional Japanese food that's been eaten for over a thousand years. It's made by fermenting soybeans with a specific bacterium called Bacillus subtilis natto. The result is a sticky, stringy dish with a very distinctive smell — one that most people outside Japan either love or find difficult to get past.
In Japan, it's eaten at breakfast, often served over rice with soy sauce and mustard. It's considered a staple food and has long been associated with the exceptional longevity and low rates of certain diseases seen in Japanese populations.
The natto benefits go well beyond just being a protein-rich food. It's one of the richest natural sources of Vitamin K2 in the world, it contains natural probiotics that support gut health, and it's the original source of nattokinase — a powerful enzyme that researchers have studied closely for its cardiovascular effects.
So what exactly is nattokinase?
Nattokinase is an enzyme that forms naturally during the fermentation of natto. It was first identified by a Japanese researcher in 1980 who noticed that natto seemed to have a remarkable effect on blood clotting — specifically, it appeared to help break down fibrin, a protein that plays a key role in the formation of blood clots.
Since then, nattokinase benefits have been studied in clinical settings for their potential to support healthy circulation, blood flow, and cardiovascular function. It's become one of the more widely researched natural enzymes in the supplement world.
Key differences between natto and nattokinase
Japanese natto (whole food):
Contains nattokinase, Vitamin K2, natural probiotics, protein, and fibre. A complete food with multiple overlapping benefits. Strong smell and sticky texture makes it difficult for most UK consumers to eat regularly.
Nattokinase supplement:
Delivers a concentrated dose of the nattokinase enzyme. No taste or smell. Easy to take daily. Some formulas also include Vitamin K2, making them a closer match to the full natto profile in one capsule.
Neither one is better in every situation. Eating whole natto is wonderful if you enjoy it and have access to it. But for most people in the UK, a quality natto supplement is simply the more practical way to get consistent, meaningful benefits every day.
What are the benefits of natto and nattokinase?
Both the whole food and the extracted enzyme share some overlapping benefits, though they work through slightly different mechanisms.
The natto benefits as a whole food include support for gut health through its natural probiotic bacteria, strong bone health support through its high Vitamin K2 content, and cardiovascular support through the nattokinase enzyme it contains.
Nattokinase benefits, as a standalone enzyme, are more focused. Research suggests it may help support healthy blood viscosity, promote better circulation, and help maintain healthy blood pressure levels — all of which matter a great deal for long-term heart health.
It's worth noting that nattokinase works best as part of an overall healthy lifestyle, not as a replacement for one.
Final Thoughts
Natto and nattokinase are closely related, but they serve slightly different purposes. One is a complete food, while the other is a focused supplement.
Whether you choose Japanese natto or a Nattokinase Supplement UK, both can be useful depending on your needs.
The key is to choose what fits your routine and stay consistent.
FAQs
1. What is the difference between natto and nattokinase?
Natto is a fermented food, while nattokinase is an enzyme extracted from it.
2. What are nattokinase benefits?
It is mainly used to support blood flow, circulation, and heart health.
3. What are natto benefits?
Natto provides probiotics, Vitamin K2, and nutrients that support gut and bone health.
4. Is nattokinase supplement UK safe to use?
Most people can use it safely, but it is best to follow dosage guidelines and consult a professional if needed.
5. Can I take both natto and nattokinase?
Yes, some people include both, but it depends on your personal health goals.