GeneIII combines biotechnology and clinical research to advance cellular longevity. Our ultra-pure L-Ergothioneine supports energy, liver and brain health, and defends against oxidative stress and aging.*
8
Clinical Trials
GeneIII leads and conducts investigator-initiated trials.
180k+
Customers Worldwide
Customers across the globe who trust our quality and consistency.
100+
Studies on L-EGT
Scientists have extensively studied the health effects of ergothioneine.
33
Patents
GeneIII’s patented fermentation and purification technologies advance L-Ergothioneine production with exceptional purity and consistency.
GeneIII L-Ergothioneine Products
Most Popular
Sale
New
L-Ergothioneine + Milk Thistle Capsules
Measurable Improvements Within 30 Days*
In a clinical study, participants reported measurable improvements after 30 days of GeneIII L-Ergothioneine supplementation:
- ~39% improvement in overall physical function, including reduced fatigue and improved recovery*
- ~51% improvement in daytime energy levels*
- Improvements in sleep quality and how participants felt the next day*
Based on a 30-day clinical study using self-reported outcome measures. Results may vary.
Pure, third-party tested L-Ergothioneine in a single daily capsule.
Our Commitment to Higher Standards
At GeneIII, we hold ourselves to uncompromising standards of quality, purity, and transparency. Our L-Ergothioneine is produced with advanced patented fermentation technology, achieving 99.99% purity and exceptional bioavailability. Each formulation reflects our commitment to scientific precision and genuine care for your well-being.
LOVED BY OUR COMMUNITY
After taking this product for several weeks, I noticed a differenced in focus and mental clarity. I felt sharper and also much more energized the next day after taking this.
Verified Buyer
We heard Geneiii is the leading brand of Ergothionine so we wanted to give it a try- it’s awesome! We would 100% recommend to all family and friends and this listing is a great deal too :)
Verified Buyer
Worked just as advertised - noticeably more energy since I began taking two pills per day.... highly recommend
Verified Buyer
Wow! I was honestly surprised at how much clearer my mind felt after taking this. I started with two a day like other reviewers suggested, and it really helped me with mental clarity. I noticed way less brain fog and better focus after taking this. So happy I added this to my routine!
Verified Buyer
Working in a fast-paced environment, I’m always looking for an edge to keep me awake and my mind sharp... I tried GeneIII on a friend’s recommendation. After a few weeks, I definitely felt the difference. Mentally, I feel quicker and sharper. Physically, my gut felt “cleaner”.
Verified Buyer
I’ve been taking this supplement for two months now and I feel more energized! I am naturally a sleepy person but ergothionine has helped me stay awake during the day and I feel more focused too. I highly recommend.
Verified Buyer