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The Enzyme Stack | Nattokinase 20,000 FU + Serrapeptase 120,000 SPU

The Enzyme Stack | Nattokinase 20,000 FU + Serrapeptase 120,000 SPU

20,000 FU + 120,000 SPU — Dual Enzyme Stack
3rd-Party Lab Tested
60-Day Money-Back Guarantee
Circulatory + Systemic Support Nattokinase supports healthy blood flow while Serrapeptase supports the body's natural inflammatory response
Maximum Combined Potency 20,000 FU Nattokinase + 120,000 SPU Serrapeptase — two clinical-strength enzymes in one stack
One Simple Daily Stack Just 2 capsules of each on an empty stomach — simple, consistent, effective
Premium Enzyme Sourcing Nattokinase from fermented Japanese natto, paired with high-purity Serrapeptase
Minimal Ingredients No artificial additives, no unnecessary fillers — just what works
Whole-Body Wellness Promotes healthy blood flow, arterial flexibility, and the body's natural recovery processes
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AzureVitamins Nattokinase is a premium enzyme supplement formulated to support healthy circulation and everyday cardiovascular wellness as part of a balanced lifestyle.

FU stands for “Fibrinolytic Units,” which measures nattokinase enzyme activity. Our high-potency formula is designed for quality-conscious wellness consumers looking for a concentrated nattokinase supplement.

Why 20,000 FU?

Standard 2,000-10,000 FU doses often fall short of the systemic threshold needed for maximum impact. AzureVitamins delivers a concentrated 20,000 FU to ensure a highly bioavailable dose survives digestion and enters the bloodstream at full clinical strength.

Is it safe?

Yes. Our high-potency enzyme is crafted with a clean, 4-ingredient formula, sourced from authentic fermented Japanese soybeans, and is third-party lab tested to verify its purity and potency.

NOTE
As with any high-potency supplement, please consult your healthcare provider before use, especially if you are pregnant, nursing, taking blood thinners, or have an existing medical condition.

Nattokinase is commonly used to support healthy circulation, vascular wellness, and overall cardiovascular support as part of a healthy lifestyle.

Our formula focuses on:

  • High-potency 20,000 FU enzyme activity
  • Minimal filler ingredients
  • Premium biotech-inspired packaging
  • Quality-focused formulation
  • 3rd party tested standards

Each serving contains:

  • Nattokinase (20,000 FU) — 500 mg

Other ingredients:

  • Microcrystalline Cellulose
  • Magnesium Stearate
  • Silicon Dioxide

The recommended serving size is 2 capsules daily, or as directed by your healthcare professional.

Yes, many customers choose to include nattokinase as part of their daily wellness routine.

This product is commonly chosen by adults interested in circulation support, cardiovascular wellness, and longevity-focused wellness routines.

Many customers combine Nattokinase with Serrapeptase.

If you are taking medications or have a medical condition, consult your healthcare professional before use.

Each bottle contains 60 capsules, which equals a 30-day supply when taking the recommended serving size of 2 capsules daily.

Yes. Quality and purity are important to us, and our products are manufactured with strict quality standards in mind.

View full details
The Enzyme Stack | Nattokinase 20,000 FU + Serrapeptase 120,000 SPU
20,000 FU + 120,000 SPU per serving
Supports Healthy Circulation

Helps maintain normal blood flow and everyday cardiovascular function

Dual-Enzyme Action

Nattokinase targets excess fibrin while Serrapeptase supports the body's natural inflammatory response

Whole-Body Wellness

Promotes healthy arterial flexibility, blood pressure in normal range, and systemic recovery

PREMIUM ENZYME STACK

What is the AzureVitamins
Nattokinase + Serrapeptase Stack?

The AzureVitamins Nattokinase + Serrapeptase Stack pairs two premium high-potency enzymes designed to support healthy circulation and systemic wellness as part of a balanced lifestyle.

Unlike low-potency formulas with unnecessary fillers, our stack delivers 20,000 FU of Nattokinase and 120,000 SPU of Serrapeptase per serving — clinical-strength doses, in a clean, minimal formula built for people who take their health seriously.

Each serving contains:

  • 20,000 FU nattokinase enzyme activity — the highest potency available
  • 120,000 SPU serrapeptase enzyme activity for systemic support
  • Non-GMO, fermentation-derived nattokinase from premium soybeans
THE SCIENCE BEHIND IT

How the AzureVitamins Enzyme Stack
Works in Your Body

From capsule to circulation — here's exactly what happens when you take 20,000 FU nattokinase and 120,000 SPU serrapeptase every day.

01

Take 2 Capsules of Each Daily

Take on an empty stomach — 30 minutes before a meal or 2 hours after. This gives both enzymes direct access to your digestive tract without competing with food proteins.

02

Absorbed Into Bloodstream

Both nattokinase and serrapeptase survive digestion and pass through the intestinal wall directly into your bloodstream — where they circulate and begin working systemically throughout your body.

03

Dual-Enzyme Action Begins

At 20,000 FU, nattokinase supports the body's natural fibrin-regulation processes — the protein responsible for dangerous clots and thick, sluggish blood — while 120,000 SPU of serrapeptase supports the body's natural inflammatory response throughout tissue.

04

Whole-Body Wellness Restored

With circulation supported and inflammatory response balanced, the body works as it should. Supports healthy blood pressure already in normal range, oxygen delivery improves, and most users report noticeably more energy, mental clarity, and overall recovery within weeks.

⏱️
When do results start? Most users notice changes in 2–4 weeks. Full whole-body benefits typically develop over 60–90 days of consistent daily use.
🔬
Why the dual-enzyme dose matters Clinical research on nattokinase uses doses of 10,000–20,000 FU, and serrapeptase research uses doses up to 120,000 SPU. Lower doses simply don't reach the threshold needed to produce measurable results.
🗾🐛 TWO ANCIENT DISCOVERIES, ONE MODERN STACK

Two Enzymes Nature Perfected
Centuries Before Science Caught Up

One enzyme comes from a 1,000-year-old Japanese breakfast food. The other comes from a silkworm dissolving its own cocoon. Together, they're the foundation of the AzureVitamins Enzyme Stack.

🍱 Nattokinase Fermented Soybeans · Japan
1980 Discovered by Dr. Hiroyuki Sumi, Chicago University
18 hrs Time to fully dissolve an arterial fibrin clot in testing
20,000 FU per serving in AzureVitamins formula
+
🐛 Serrapeptase Silkworm Intestine · Japan
1960s First isolated from silkworm intestine by Japanese researchers
100% Precision — dissolves non-living protein, leaves healthy tissue intact
120,000 SPU per serving in AzureVitamins formula
🍱

The Food That Changed Cardiovascular Science

For over 1,000 years, Japanese people have eaten natto — fermented soybeans — as a daily breakfast staple. Researchers noticed striking patterns: regions with the highest natto consumption had dramatically lower rates of stroke and arterial disease, well into people's 80s and 90s.

In 1980, Dr. Hiroyuki Sumi tested 173 foods for their effect on blood clots. Natto extract dissolved a fibrin clot completely in 18 hours — every other substance took 2+ days or didn't work at all. He named the enzyme nattokinase.

🐛

The Enzyme That Frees the Silkworm

A silk cocoon is one of the toughest natural protein structures on earth, with tensile strength comparable to steel. The silkworm has no teeth or tools to escape it — only an enzyme produced by bacteria in its intestine that dissolves the cocoon wall with extraordinary precision.

In the late 1960s, Japanese researchers isolated this bacteria — Serratia sp. E-15 — and found its enzyme could break down non-living protein structures while leaving healthy living tissue completely undamaged. The same mechanism, now called serrapeptase.

🧬

Two Origins, One Daily Stack

Neither enzyme is practical to get from food. A serving of natto provides only 1,000–2,000 FU — you'd need 10 servings daily to hit a meaningful dose. And no one is eating silkworm cocoons. Today, both enzymes are produced by controlled fermentation and concentrated to clinical-strength potency.

AzureVitamins combines them into a single daily stack: 20,000 FU of nattokinase for circulatory support, and 120,000 SPU of serrapeptase for systemic support — the doses used in published research, in 4 clean capsules a day.

1980
Nattokinase discovered
1960s
Serratia E-15 isolated
Two enzymes, discovered by Japanese researchers decades apart — now combined into one daily stack at clinical-strength potency
🏝️ Okinawa Blue Zone

The world's highest concentration of people who live past 100. Natto and fermented soy are daily staples — and cardiovascular disease is nearly absent.

more centenarians than Western countries
80% lower heart disease rate vs. Western populations
📊 What the clinical research shows
77% showed improved artery wall thickness (nattokinase research)
36% reduction in arterial plaque buildup (nattokinase research)
80s–90s European/Japanese research identifies serrapeptase as most effective systemic enzyme
Today Both enzymes available at clinical-strength potency in one daily stack
💊

Two Origins. One Modern Stack.

The AzureVitamins Enzyme Stack delivers 20,000 FU of nattokinase and 120,000 SPU of serrapeptase per serving — the same enzymes that have supported circulatory and systemic health in Japan for decades, concentrated into clean capsules. No fillers. No fermented smell. Just the enzymes, at the doses used in published research, wherever in the world you live.

20K + 120K
FU + SPU per serving
Therapeutic dual-dose daily
🍱🐛 Two enzymes, two origins 💊 One daily stack
*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. Consult your healthcare provider before use, especially if taking blood thinners or anticoagulants.
WHY IT WORKS

6 Reasons Customers Choose Our Enzyme Stack

🧬

Dual-Enzyme Action

Nattokinase supports the body's natural fibrin-regulation processes for healthy circulation, while Serrapeptase supports the body's natural protein breakdown and inflammatory response — working together at the enzymatic level to support normal systemic function.

20,000 FU + 120,000 SPU — Highest Potency Available

Most stacks deliver low-potency doses of each enzyme. We deliver 20,000 FU of Nattokinase and 120,000 Serratiopeptidase Units of Serrapeptase per serving — the full daily research-referenced amount of both enzymes in one simple daily routine.

🎯

Precision Enzyme Activity

Nattokinase targets excess fibrin buildup in the bloodstream, while Serrapeptase selectively targets non-living protein structures — the same mechanism that allows the silkworm moth to dissolve its cocoon without damaging itself.

🌿

Natural Fermentation Sources

Nattokinase is derived from fermented Japanese natto, and Serrapeptase from Serratia E-15 — the bacterial strain originally isolated from silkworm intestine in the 1960s. Both produced today by controlled pharmaceutical-grade fermentation. No silkworms. No animal by-products.

💧

Optimised for Systemic Absorption

Both enzymes are vulnerable to stomach acid if not properly delivered. Our capsule shells protect each enzyme through the stomach and into the small intestine — where they enter the bloodstream intact. Take on an empty stomach for full systemic activity.

Clean, Minimal Formula

Nattokinase 500mg (20,000 FU) and Serrapeptase 60mg (120,000 SPU), Microcrystalline Cellulose, Silicon Dioxide. No unnecessary fillers, no hidden blends. Third-party tested for identity, potency, and purity.

CUSTOMER REVIEWS

What Our Customers Are Saying

Real results from real people — verified purchases only.

4.9
Based on 9,281 reviews
5 ★ 89%
4 ★ 8%
3 ★ 2%
2 ★ 1%
1 ★ 0%
96% Would recommend
3 wks Avg. time to results
9,281 Verified purchases
S
Sandra K. Denver, CO
✓ Verified

"Finally — a potency that actually does something"

I've tried nattokinase from 3 other brands. All of them were between 2,000–4,000 FU and I felt nothing. Switched to AzureVitamins 20,000 FU and within 3 weeks my legs stopped feeling heavy and swollen by the end of the day. Clean formula, no fillers. I'm not going back.

J
James L. Phoenix, AZ
✓ Verified

"Noticeable difference after 4 weeks"

Takes a little patience — don't expect overnight miracles. But around week 4 I noticed I was waking up with more energy and my morning pressure readings were consistently lower. High potency was a big selling point for me. Most supplements are loaded with junk.

P
Patricia M. Seattle, WA
✓ Verified

"Circulation in my hands and feet improved"

I've had cold hands and feet for years. My cardiologist recommended nattokinase but said to find a high-potency brand. This is the highest I found at 20,000 FU. After 6 weeks my extremities are noticeably warmer and my energy is better throughout the day. Incredible product.

D
David H. Miami, FL
✓ Verified

"More energy, sharper focus, better sleep"

Didn't expect the mental clarity side effect but here we are. Better blood flow = better brain function I guess. Also sleeping deeper than I have in years. I'm 58 and feel like I'm in my 40s again. On my third bottle now. The Buy 3 Get 2 deal made it a no-brainer to stock up.

C
Carol T. Boston, MA
✓ Verified

"Cleanest nattokinase formula I've found"

As a nutritionist I read every ingredient label carefully. Most nattokinase supplements have 10+ ingredients padding. AzureVitamins has minimal added excipients. Plus the 20,000 FU is the real deal — my clients are getting results.

All reviews are from verified purchases
60-day money-back guarantee — no questions asked
Over 9,281 customers and growing every week
HEAD TO HEAD

Most Enzyme Stacks
Aren't Strong Enough

At 2,000–10,800 FU and 20,000–40,000 SPU, standard brands fall below the threshold needed for meaningful results. AzureVitamins delivers 20,000 FU + 120,000 SPU per serving — potency that actually moves the needle.

Compare
⭐ BEST CHOICE
AzureVitamins
20K FU + 120K SPU
per serving
Standard Brands
2,000–10,800 FU / 20,000–40,000 SPU
Combined potency per serving The dual dose that actually works
20,000 FU + 120,000 SPU
2,000–10,800 FU / 20,000–40,000 SPU
Dual-enzyme coverage Circulatory + systemic, in one stack
Nattokinase + Serrapeptase
Usually sold separately, mismatched doses
Capsules per bundle Full 30-day supply of both
60 + 60 capsules
Often 30–60, varies
Formula cleanliness Fewer ingredients = less filler
Clean, minimal formula
8–15+ fillers
3rd-party lab tested Potency & purity verified
Always verified
Rarely disclosed
Money-back guarantee Risk-free purchase
60 days
30–60 days
Value buying as a stack What you pay vs. buying separately
Bundle pricing built in
Pay full price for each, separately
🏆

The bottom line: AzureVitamins delivers nearly 2× the combined enzymatic activity of standard brands — in a cleaner formula, at better value as a stack, backed by a 60-day guarantee.

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