At GeneIII,
science comes before everything.
We develop high-purity L-Ergothioneine through proprietary fermentation, combining scientific research with advanced biotechnology.
In-House Manufacturing
We produce our own L-Ergothioneine in-house, giving us complete control over purity, consistency, and traceability.
The GeneIII Difference
1909
First discovered by French chemist Charles Tanret
2005
Researchers discovered the body’s dedicated transporter for EGT (OCTN1), revealing that the body actively absorbs and retains it.
2021
GeneIII introduced a patented precision fermentation process to produce EGT at 99.99% purity – the highest on the market.
01. Proprietary Strain Development
Our proprietary production strain was developed specifically to produce high-purity L-Ergothioneine, forming the foundation of our fermentation technology.
02.Precision Fermentation
Our patented fermentation process creates the ideal production environment by carefully controlling temperature, pH, oxygen, and nutrients.
03.Multi-Step Purification
Multiple purification steps remove impurities, producing 99.99% pure L-Ergothioneine— the highest purity currently available on the market.
04. Encapsulation
Our purified L-Ergothioneine is encapsulated and bottled in the USA in cGMP-compliant facilities that follow rigorous manufacturing and quality standards.
Rigorous Safety Standards
FDA-Reviewed
GRAS Ingredient
Third-Party Testing
Our L-Ergothioneine has received an FDA “No Questions” Letter for its GRAS notification, supporting its intended use as a food ingredient.
See our FDA GRAS notice here.
Every batch is verified by independent third-party laboratories to ensure consistent quality, purity, and safety.
Certificates of Analysis (COAs) are available upon request.
Scientific Collaborations
Our research includes collaborations with internationally recognized scientists and research institutions, including Professor Barry Halliwell and Temasek Life Sciences Laboratory.
Prof. Barry Halliwell
World-renowned expert in oxidative stress and antioxidant research.
Advancing life science research for better health outcomes.
Award-Winning
30+ International Patents
Highest Purity
pH
Oxygen
Temperature
99.99% Purity
Up to 200× fewer impurities than 98%
High Dosage
Third-Party Tested
Made in the USA
01.
02.
THIRD-PARTY VERIFIED
PASS
FAIL
Clinical Studies
GeneIII’s L-Ergothioneine has been evaluated in investigator-initiated human clinical trials registered with the World Health Organization’s International Clinical Trials Registry Platform (ICTRP).
See our clinical studies here.
Liver Health
Sleep Quality
Healthy Aging
Women’s Health
Why GeneIII
At GeneIII,
science comes before everything.
We develop high-purity L-Ergothioneine (EGT) through proprietary fermentation, combining scientific research with advanced biotechnology.
1909
First discovered by French chemist Charles Tanret
2005A Major Breakthrough
Researchers discovered the body’s dedicated transporter for EGT (OCTN1), revealing that the body actively absorbs and retains it.
2021The GeneIII Breakthrough
GeneIII introduced a patented precision fermentation process to produce EGT at 99.99% purity – the highest on the market.
In-House Manufacturing
We produce our own EGT in-house, giving us complete control over purity, consistency, and traceability.
The GeneIII Difference
Precision
Fermentation
Our patented fermentation process creates the ideal production environment by carefully controlling:
Proprietary Strain Development
Our proprietary production strain was developed specifically to produce high-purity L-Ergothioneine, forming the foundation of our fermentation technology.
Award-Winning
Highest Purity
30+ International Patents
pH
Oxygen
Temperature
01
03
04
Multi-Step Purification
Multiple purification steps remove impurities, producing 99.99% pure L-Ergothioneine— the highest purity available.
Encapsulation
Our purified EGT is encapsulated and bottled in the USA in GMP-compliant facilities that follow rigorous manufacturing and quality standards.
99.99% Purity
Up to 200× fewer impurities than 98%
Rigorous Safety
Standards
FDA-Reviewed GRAS Ingredient
Third-party Testing
Our L-Ergothioneine has received an FDA “No Questions” Letter for its GRAS notification, supporting its intended use as a food ingredient.
See our FDA GRAS notice here.
Every batch is verified by independent third-party laboratories to ensure consistent quality, purity, and safety.
THIRD-PARTY VERIFIED
PASS
FAIL
Certificates of Analysis (COAs) are available upon request.
02
GMP Compliant
Made in
USA
Third‑Party
Tested
FDA GRAS
Vegan
Gluten-Free
Scientific Collaborations
Our research includes collaborations with internationally recognized scientists and research institutions, including Professor Barry Halliwell and Temasek Life Sciences Laboratory.
Prof. Barry Halliwell
World-renowned expert in oxidative stress and antioxidant research.
Advancing life science research for better health outcomes.
Clinical Studies
GeneIII’s L-Ergothioneine has been
evaluated in investigator-initiated
human clinical trials registered with
the World Health Organization’s
International Clinical Trials Registry
Platform (ICTRP).
See one of our clinical studies here.
Liver Health
Sleep Quality
Kidney Health
Women’s Health
Precise Dosage
Batch Tested
Quality Checked
1909
EGT is first discovered by French chemist Charles Tanret.
2005
Researchers discover the body’s dedicated transporter for EGT (OCTN1), revealing that the body actively absorbs and retains it.
2021
GeneIII introduced a patented fermentation process to produce EGT at 99.99% purity– the highest on the market.
