
Helps maintain normal blood flow and everyday cardiovascular function
Nattokinase targets excess fibrin while Serrapeptase supports the body's natural inflammatory response
Promotes healthy arterial flexibility, blood pressure in normal range, and systemic recovery
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
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.
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.
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.
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.
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.
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.
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.
The world's highest concentration of people who live past 100. Natto and fermented soy are daily staples — and cardiovascular disease is nearly absent.
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.
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.
What Our Customers Are Saying
Real results from real people — verified purchases only.
"My doctor was genuinely surprised"
Been taking this for 8 weeks. My last checkup showed my readings moved into a healthier range dropped from 138/88 to 122/78. My doctor asked what I changed. I told him — just added AzureVitamins Nattokinase. The 20,000 FU potency is no joke. Other brands I tried at 2,000 FU did nothing. This one actually works.
"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.
"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.
"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.
"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.
"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.
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.
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.