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% purity and exceptional bioavailability. Each formulation reflects our commitment to scientific precision and genuine care for your well-being.
Clinically tested benefits seen within 30 days
Participants experienced measurable improvements in just 30 days after taking L-Ergothioneine.
- 20% better liver function
- 39% less fatigue
- 52% better sleep quality
No side effects reported.
LOVED BY OUR COMMUNITY
I bought this for my mom. She already takes CoQ10, and I was hoping this would enhance the mental clarity it provides... She really feels like it is helping her remember more and that she is finally getting a good night's sleep, not waking up 7 or 8 times during the night... It doesn't have any nasty aftertaste either. She said she will continue to use it.
Verified Buyer
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
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
FAQ
What is L-Ergothioneine?
L-Ergothioneine (EGT) is a naturally occurring amino acid antioxidant that the human body can’t make on its own. It’s found in trace amounts in certain foods like mushrooms and beans, and plays a key role in cellular protection. What makes EGT unique is that our bodies have a dedicated transporter (called OCTN1) specifically designed to absorb and deliver it to areas most exposed to oxidative stress, such as the brain, liver, and skin.
Why is L-Ergothioneine important?
Over time, our cells are exposed to oxidative and environmental stress that can impact how they function and recover. L-Ergothioneine helps to maintain mitochondrial health and support the body’s natural ability to protect and repair itself. Because the body doesn’t synthesize EGT and modern diets provide very little, maintaining adequate levels becomes increasingly important as we age. Supplementing with a pure, bioavailable form helps replenish what’s missing and supports long-term cellular resilience.
What makes GENEIII different from other brands?
Most brands use mushroom extracts or purchase bulk L-Ergothioneine from outside suppliers, often of varying purity and origin. This matters because extract-based ingredients can contain only trace amounts of EGT or inconsistent levels from batch to batch, while bulk-sourced material often lacks full traceability or purity verification.
At GENEIII, we take a completely different approach. We are a biotechnology company first, not a reseller. Every capsule begins in our own research lab, where we produce L-Ergothioneine through a patented fermentation and purification system. This process allows us to achieve 99.99% verified purity, one of the highest levels ever recorded. Our commitment to traceability ensures you know exactly where your ingredient comes from and how it’s made.
s L-Ergothioneine safe to take daily?
Yes. L-Ergothioneine has been evaluated in multiple safety and toxicology studies. L-Ergothioneine supports long-term cellular protection, so it’s safe and beneficial for ongoing daily use. Think of it as a foundational nutrient for healthy aging, not a quick fix.
When will I feel a difference?
Every body is unique. Some users report noticing changes in energy, focus, or overall well-being after a few weeks of consistent use, while others experience more gradual results. We recommend daily use for at least 30-60 days for cumulative cellular benefits.
Can I take GENEIII L-Ergothioneine with other supplements?
Yes. L-Ergothioneine can be safely combined with most supplements and multivitamins. However, if you’re pregnant, nursing, or taking prescription medications, we recommend consulting with a healthcare professional before use.
How is GENEIII tested for quality?
Every batch is rigorously tested in-house and by independent third-party laboratories for purity, identity, and potency. We use SGS and other accredited labs to confirm our 99.99% purity standard. Certificates of Analysis (COAs) are available upon request.