• Nattokinase 10,800 FU - Enteric Coated
  • Nattokinase 10,800 FU - Enteric Coated
  • Nattokinase 10,800 FU - Enteric Coated
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Nattokinase 10,800 FU - Enteric Coated

Nattokinase 10,800 FU - Enteric Coated

Most nattokinase never makes it past your stomach. Here’s why that matters.

Nattokinase is a fibrinolytic enzyme from fermented soybeans, traditionally used in Japan to support cardiovascular and circulatory health. But enzymes are fragile. Stomach acid breaks them down before they can enter the bloodstream, where research shows they actually do their work. Take nattokinase with food or in a standard capsule, and most of the enzyme may be destroyed before it ever reaches the small intestine.

The dose only matters if the delivery works. The landmark 2022 cardiovascular study used 10,800 FU per day for 12 months. But nearly every 10,800 FU product on the market sits in a standard capsule with no protection against stomach acid.

Therexa Nattokinase 10,800 FU is enteric-coated, engineered to resist stomach acid and release the enzyme in the small intestine where it can be absorbed. One clean ingredient, one capsule coating built to protect what you’re paying for. †

This product is Clean Label Project Certified and has earned the Purity Award, placing it among the top 33% of products tested in its category for purity.

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Certificate of Analysis

Therexa CoA Nattokinase Analysis Therexa Nattokinase CoA Heavy Metals Microbes Lot 2026042201 Therexa Nattokinase 10800 CoA Enteric Coated Capsule Test Lot 2026042201

Benefits

  Exactly the Dose the Study Used: 540 mg of nattokinase standardized to 10,800 FU per serving—the precise daily amount used in the landmark 12-month cardiovascular study. † 

  Enteric Coating That Protects the Enzyme: Standard capsules dissolve on contact with stomach acid, where most of the nattokinase breaks down before it can reach circulation. Our enteric-coated capsules are designed to survive the stomach and release the enzyme in the small intestine, where it can be absorbed and support systemic fibrinolytic activity. † 

  Heart & Circulatory Support: Nattokinase supports healthy fibrinolytic activity—the body’s natural process for maintaining normal blood flow and circulation. Traditional Japanese cardiovascular wisdom, standardized into a single daily serving. † 

  120 Vegan Capsules, 60-day Supply: Real value, so you can stay consistent long enough for the full study-length duration to matter.

Shipping & Return

Shipping: Fulfilled by Amazon. Prime members get free 1-2 day delivery. Standard shipping: 3-7 business days.

Returns: 90-day money-back guarantee. Not satisfied? Email support@therexa.co with your order number - no return required.

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Therexa Nattokinase — Supply Chain & Verification

Product Transparency

From Fermentation to Verified Finished Product

See how Therexa Nattokinase 10,800 FU moves from a non‑GMO soybean substrate through fermentation, extraction, activity standardization, enteric encapsulation, and independent U.S. laboratory verification.

Manufacturing Journey

From raw material to finished capsule

Non‑GMO Soybean Substrate

Base substrate for traditional natto fermentation

Natto Fermentation

B. subtilis var. natto naturally produces nattokinase

Extraction + Concentration

Enzyme extracted from fermented material, then concentrated

Activity Standardization

Raw-material activity, standardized for consistency

~21,000–24,700 FU/g
Finished-Dose Formulation

Standardized material formulated to final serving strength

10,800 FU / serving
Enteric‑Coated Capsule

Intact under gastric conditions, releases in the intestine

Production & Testing Responsibilities

How the ingredient, finished capsule, and independent testing are separated

Raw‑Material Production

Fermentation → Extraction → Concentration → FU Standardization

Produces & standardizes the ingredient

Finished‑Dose Manufacturing

Finished-dose formulation → Enteric encapsulation

Converts ingredient into finished capsule

Independent Finished‑Product Testing

Independent U.S. laboratory testing

Finished-product potency testing

Tested in the USA

Independent U.S. Laboratory Verification

The finished product is evaluated for potency, contaminants, microbiology, and enteric performance through independent U.S. laboratories.

Potency

Starya Labs

Chino, California · ISO/IEC 17025

Finished-product fibrinolytic activity testing.

10,800 FU per serving

Purity + Microbiology

Analytical Resource Labs

Lehi, Utah · ISO/IEC 17025

Arsenic, Cadmium, Lead, Mercury, plus microbiological screening.

Passed heavy‑metal & microbial

Enteric Performance

Eurofins

Madison, Wisconsin · ISO/IEC 17025

• Simulated gastric → capsule intact • Simulated intestinal → capsule releases
Conforms to enteric standard

Clean Label Project — Third-Party Certification

Independent product certification covering multiple testing categories.

Heavy MetalsPesticidesMicrobiology

Testing & Documentation Coverage

What is supported across production records, laboratory testing, and third-party certification

Non‑GMO soybean substrate
B. subtilis var. natto fermentation
Nattokinase / fibrinolytic activity
Standardized raw-material activity
10,800 FU finished-product potency
Heavy-metal screening
Microbiological testing
Enteric performance
Supporting pesticide documentation
Clean Label Project certification
Technical Transparency & Verification Boundaries
The exact proprietary strain designation is not publicly disclosed.
Species identified as Bacillus subtilis var. natto; the exact strain remains confidential.
Therexa does not represent this material as NSK‑SD or as using the NSK‑SD proprietary strain or process.
Current identity support is based on controlled production documentation together with functional fibrinolytic activity testing.
Molecular confirmation by LC‑MS/MS, SDS‑PAGE, or sequencing has not been performed.

How Therexa Nattokinase 10,800 FU Is Made

Non‑GMO soybeans are fermented with Bacillus subtilis var. natto, producing nattokinase during fermentation. The enzyme is extracted, concentrated, and standardized to approximately 21,000–24,700 FU/g at the raw-material stage.

The standardized ingredient is formulated to deliver 10,800 FU per serving, placed into an enteric-coated capsule, and the finished product is independently evaluated in the United States for potency, heavy metals, microbiology, and enteric performance.

Non‑GMO soybean substrate → natto fermentation → nattokinase extraction → concentration → activity standardization → finished-dose formulation (10,800 FU/serving) → enteric encapsulation → independent U.S. laboratory verification
Therexa Nattokinase 10,800 FU — Product Transparency
LAB TEST RESULTS FOR EVERY PRODUCT cGMP CERTIFIED FACILITY USA LAB-TESTED  90-DAY MONEY-BACK GUARANTEE OPTIMAL ABSORPTION

Every Batch. Tested. Published.

We send every Therexa product to independent, accredited laboratories in the United States for third-party testing. Then we publish the results — not summaries, not badges, the actual reports.

Heavy Metals (Every Batch)

Every batch is screened for arsenic, cadmium, lead, and mercury to ensure safety.

Microbial Contamination (Every Batch)

Every batch is tested for bacteria, yeast, mold, E. coli, Salmonella, and other pathogens.

Identity Verification (Annual)

Each product undergoes annual identity testing to confirm the ingredients match exactly what's on the label.

Why This Matters?

  • The supplement industry is largely self-regulated. Many brands never test their products - or only test once and reuse that report for years.
  • We test every batch for safety. We verify every product annually for identity. And we will show you the results.
  • If a brand won't publish their lab reports, ask yourself what they're hiding.