Table of Contents
- Introduction
- What Is Nattokinase?
- What Is Vitamin K2?
- The Relationship Between the Two
- The Importance of Bioavailability
- How Nattokinase Works in the Body
- How Vitamin K2 Works in the Body
- Comparing the Two: A Quick Reference
- Choosing the Right Supplement Strategy
- The Role of Fermentation in Wellness
- How to Build Your Routine
- Why Quality and Transparency Matter
- Understanding Potential Interactions
- The Big Picture: Heart and Bone Health
- The Cymbiotika Difference
- FAQ
Introduction
Natto is a traditional Japanese staple made from fermented soybeans. It is famous for its sticky texture and pungent aroma. For centuries, it has been a cornerstone of Japanese longevity and heart health. Modern science has pinpointed two specific components of natto that make it so beneficial: nattokinase and vitamin K2. Because these two nutrients share the same origin, many people wonder if one contains the other.
At Cymbiotika, we believe that understanding the nuance of your supplements is essential for building a routine you can trust. This post will clarify the relationship between nattokinase and vitamin K2. We will explore how they are produced, why they are often separated in supplement form, and how they work in the body to support your wellness goals.
While nattokinase and vitamin K2 are both born from the same fermentation process, they are distinct compounds with different roles in the body.
What Is Nattokinase?
Nattokinase is a natural enzyme produced during the fermentation of soybeans. It is not found in raw soy. Instead, it is created when a specific bacterium called Bacillus subtilis is added to cooked soybeans. This bacterium breaks down the soy proteins and produces the enzyme as a byproduct.
Nattokinase is classified as a fibrinolytic enzyme. In plain English, this means it is an enzyme designed to break down fibrin. Fibrin is a protein in the body that acts like a mesh or a biological "net." It is a primary component of blood clots. When fibrin builds up, it can slow down circulation or make the blood more viscous.
Quick Answer: No, nattokinase does not "contain" vitamin K2. They are two different substances. While both are found together in the food source natto, nattokinase is an enzyme (a protein) and vitamin K2 is a fat-soluble vitamin.
What Is Vitamin K2?
Vitamin K2, also known as menaquinone, is a fat-soluble vitamin that plays a vital role in calcium regulation. While vitamin K1 is mostly found in leafy greens and helps with blood clotting, K2 is primarily found in fermented foods and animal products.
The primary job of vitamin K2 is to direct calcium to the right places. It activates proteins that help deposit calcium into your bones and teeth. Simultaneously, it helps keep calcium out of your soft tissues, such as your arteries and heart valves.
In the food natto, vitamin K2 is present in high amounts, specifically in the form of MK-7. This specific form has a long half-life, meaning it stays in your body longer and provides more sustained support compared to other forms of vitamin K. For another look at how vitamin K2 can fit into a broader wellness routine, explore Liposomal Vitamin D3 + K2 + CoQ10.
The Relationship Between the Two
It is easy to see why confusion exists. If you eat a bowl of natto, you are consuming both nattokinase and vitamin K2. They are produced by the same fermentation process. However, in the world of supplementation, things are a bit more complex.
When we create a supplement, we often isolate specific compounds to achieve a targeted health goal. If a manufacturer isolates the nattokinase enzyme from the fermented soy, the resulting extract is pure nattokinase. It does not naturally carry the vitamin K2 along with it unless it is intentionally added back in or left unrefined.
Why Are They Often Separated?
Many high-quality nattokinase supplements are specifically labeled as "vitamin K2-free." This is not an accident. It is a deliberate choice made for safety and compatibility.
Vitamin K is well-known for its role in blood coagulation. It helps the blood clot. Nattokinase, on the other hand, is used to support healthy blood flow and break down fibrin. For individuals taking certain medications that manage blood thickness, vitamin K can interfere with the medication's effectiveness. By removing the vitamin K2 from nattokinase, manufacturers provide a way for people to support their circulation without potentially disrupting their medication balance.
Key Takeaway: While natto (the food) contains both, nattokinase (the supplement) is usually processed to remove vitamin K2. This allows for more targeted support of blood flow without the clotting-related effects of vitamin K.
The Importance of Bioavailability
Whenever we talk about enzymes like nattokinase or fat-soluble nutrients like vitamin K2, the conversation must include bioavailability. Bioavailability is the measure of how much of a substance your body can actually absorb and use.
Most standard supplements struggle with this. Enzymes can be fragile and may be broken down by stomach acid before they ever reach the small intestine where they are absorbed. Similarly, fat-soluble vitamins like K2 require a fat source for proper absorption. For more on delivery systems and nutrient absorption, read How to Keep Your Cells Healthy as You Age.
This is why formulation design is so critical. We prioritize delivery systems that protect the ingredients. For example, our Liposomal Vitamin D3 + K2 + CoQ10 uses liposomal delivery. A liposome is a tiny, fatty sphere that mimics the body’s own cell membranes. It wraps the nutrients in a protective layer, allowing them to bypass the harsh environment of the digestive tract and enter the bloodstream more efficiently.
How Nattokinase Works in the Body
Nattokinase is unique because it works on multiple pathways to support the cardiovascular system. It doesn't just "thin" the blood in the traditional sense. Instead, it works with the body’s natural systems to maintain balance.
Supporting Fibrinolysis
As we age, our body’s natural ability to produce enzymes that break down fibrin can decrease. When fibrin levels stay high, blood can become "sticky." This makes the heart work harder to move blood through the vessels. Nattokinase mimics the action of plasmin, an enzyme your body naturally produces to keep fibrin levels in check.
Supporting Healthy Blood Pressure
Many people find that nattokinase helps maintain blood pressure levels already within a healthy range. It may do this by supporting the elasticity of the blood vessel walls. When vessels are flexible and clear of excess protein buildup, blood flows more easily, reducing the pressure against the arterial walls.
How Vitamin K2 Works in the Body
If nattokinase is about the "flow" of the blood, vitamin K2 is about the "environment" the blood moves through.
Calcium Traffic Control
Calcium is a double-edged sword. We need it for strong bones, but we do not want it in our arteries. Arterial calcification happens when calcium deposits build up in the lining of the blood vessels, making them stiff. Vitamin K2 activates a protein called matrix GLA protein (MGP). Once activated, MGP binds to calcium and prevents it from sticking to the arterial walls.
Bone Density Support
By activating a protein called osteocalcin, vitamin K2 ensures that the calcium in your blood is pulled into the bone matrix. This is why K2 is almost always paired with Vitamin D3. While D3 helps you absorb calcium from your food, K2 tells that calcium where to go. You can explore additional options in the Healthy Aging Supplements collection.
Comparing the Two: A Quick Reference
| Feature | Nattokinase | Vitamin K2 |
|---|---|---|
| Type | Enzyme (Protein) | Fat-soluble Vitamin |
| Primary Source | Fermented Soy (Natto) | Fermented Soy, Grass-fed Dairy |
| Main Role | Breaks down fibrin (supports flow) | Regulates calcium (supports bones/arteries) |
| Mechanism | Fibrinolytic activity | Activates MGP and Osteocalcin |
| Common Pairing | Often taken alone or with Serrapeptase | Usually paired with Vitamin D3 |
Choosing the Right Supplement Strategy
Deciding whether you need nattokinase, vitamin K2, or both depends on your individual wellness goals. Many people benefit from both, but they serve different functions.
When to Consider Nattokinase
If your focus is on circulation, blood flow, or maintaining healthy blood pressure, nattokinase is a strong choice. It is particularly popular for people who spend long periods sitting, such as during frequent air travel or at a desk job, as it supports the body's natural defenses against stagnant blood flow.
Note: If you have a soy allergy, check your labels carefully. While nattokinase is derived from soy, some highly purified forms may be safe for some, but many still carry soy markers.
When to Consider Vitamin K2
If you are focused on bone health or preventing arterial stiffness, vitamin K2 is essential. It is a foundational nutrient for anyone taking a calcium supplement or looking to support long-term heart health.
When choosing a K2 supplement, look for the MK-7 form. It is more stable and has a longer-lasting effect in the body than the MK-4 form. Our Liposomal Vitamin D3 + K2 + CoQ10 is designed for those who want to support bone density and cardiovascular health simultaneously using a highly bioavailable format.
The Role of Fermentation in Wellness
Both nattokinase and vitamin K2 highlight the incredible power of fermentation. During fermentation, bacteria transform simple ingredients into complex, bioactive compounds. This process often makes nutrients more "bio-accessible."
We use these principles of natural transformation in several of our formulations. For example, our Pürblack Pure Mineral Shilajit Live Resin is a complex of trace minerals and organic acids formed over centuries of natural decomposition and pressure. To learn more about this ingredient and how format can affect a wellness routine, read Which Is the Best Shilajit?.
How to Build Your Routine
Adding these nutrients to your day doesn't have to be complicated. Consistency is much more important than intensity. You don't need to take every supplement on the market; you need to take the ones that fill your specific gaps.
Step 1: Identify your priority.
Are you more concerned about circulation and blood flow, or bone density and calcium regulation? This helps you decide between nattokinase and K2.
Step 2: Consult a professional.
Because both of these nutrients affect the cardiovascular system, it is vital to speak with your healthcare provider. This is especially true if you take medications for blood pressure or heart health.
Step 3: Focus on absorption.
Don't waste money on supplements your body can't use. Choose formats like liposomal liquids or high-quality capsules that prioritize delivery.
Step 4: Track your progress.
Give your body time to adjust. Most people find that it takes 4 to 8 weeks of consistent use to notice the subtle shifts in how they feel.
Bottom line: Nattokinase and Vitamin K2 are distinct nutrients that work better together but serve different purposes. Nattokinase manages protein buildup in the blood, while Vitamin K2 manages mineral buildup in the tissues.
Why Quality and Transparency Matter
In the supplement industry, not all nattokinase is created equal. The potency of nattokinase is measured in "Fibrinolytic Units" or FU. A standard serving is often around 2,000 FU. Without clear third-party testing, you may not be getting the active enzyme count promised on the label.
We believe wellness starts with trust. That means we provide full transparency regarding our sourcing and testing. Whether it is our Liposomal Vitamin C for immune support or our Magnesium Complex for relaxation, every product is manufactured under strict standards. We ensure that what is on the label is exactly what is in the bottle, with no hidden fillers or synthetic additives.
Understanding Potential Interactions
Because nattokinase and vitamin K2 affect the blood, it is important to be aware of how they interact with other things in your routine.
Myth: "Natural" supplements can't interact with medication.
Fact: Because nattokinase and vitamin K2 are biologically active, they can absolutely interact with medications, particularly those used for blood health. Always check with your doctor.
If you are scheduled for surgery, most healthcare providers will recommend stopping nattokinase at least two weeks prior. This is because the enzyme's ability to support blood flow could increase the risk of bleeding during or after a procedure. Similarly, if you are on a vitamin K-restricted diet, standard natto or K2 supplements would be contraindicated.
The Big Picture: Heart and Bone Health
Your cardiovascular system and your skeletal system are more connected than you might think. When your body cannot manage calcium properly, your bones become weak and your arteries become stiff. This is why the discovery of nattokinase and K2 in the Japanese diet was such a breakthrough. It showed that a single food source could provide a two-pronged approach to aging.
By supporting the fluid dynamics of the blood (with nattokinase) and the structural integrity of the vessels and bones (with K2), you are giving your body the tools it needs to maintain vitality over the long term.
The Cymbiotika Difference
We don't just put ingredients in a capsule. We look at the synergy of how nutrients work in the human body. Our goal is to empower you to take control of your health through education and superior supplementation.
Our commitment to bioavailability means we use advanced liposomal delivery and high-quality sourcing for all our products. We avoid unnecessary synthetic fillers and stick to clean, non-GMO ingredients. When you choose us, you aren't just buying a supplement; you are investing in a routine designed for results.
If you are unsure where to start your journey, we recommend taking our Health Quiz. It is a simple way to get personalized recommendations based on your unique lifestyle, diet, and health goals.
FAQ
Does all nattokinase contain vitamin K2?
No, not all nattokinase supplements contain vitamin K2. While the food source natto contains both, many supplements specifically remove the vitamin K2 during processing to prevent interactions with certain medications. Always check the label for "K2-free" or "Vitamin K-free" if you need to avoid this vitamin.
Can I take nattokinase and vitamin K2 together?
Yes, many people take them together to support both bone and heart health. They work in complementary ways: nattokinase supports healthy blood flow by managing fibrin, while vitamin K2 supports arterial health by regulating calcium. However, you should consult your healthcare provider before combining them, especially if you have an existing health condition.
Why is vitamin K2 removed from nattokinase supplements?
Vitamin K2 is often removed because it helps the blood to clot, which is the opposite of nattokinase’s goal of breaking down fibrin. For individuals who need to avoid vitamin K due to specific medications, a K2-free nattokinase supplement provides a safer way to support circulation.
Is nattokinase a vitamin?
Nattokinase is not a vitamin; it is an enzyme, which is a type of protein that speeds up chemical reactions in the body. Vitamin K2 is a fat-soluble vitamin found in the same source as nattokinase, but they are chemically and functionally distinct.
*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.
