L-Ergothioneine is one of the most fascinating compounds in longevity research—a molecule that your body cannot synthesize, yet has evolved a dedicated transport system specifically to capture from your diet.
Your body has specialized proteins whose primary job appears to be finding ergothioneine and delivering it to tissues under the highest oxidative stress.
At MyGevity, our L-Ergothioneine delivers 25 mg per capsule—the dose used in research examining health outcomes. Formulated with clean, minimal ingredients and free from seed oils, gluten, GMOs, and artificial preservatives, it provides the compound your body is designed to seek in the purest possible form.
Benefit #1: Longevity, Cellular Aging, and Healthspan
The most compelling case for ergothioneine comes from research examining its relationship with aging and mortality.
Association with Reduced Mortality Risk
Research in aging populations has found that individuals with higher blood ergothioneine levels have lower all-cause mortality risk.
Cheah IK et al., Antioxidants & Redox Signaling, 2017; doi:10.1089/ars.2016.6682
Important Context: These are observational findings showing associations, not proof that ergothioneine supplementation extends lifespan.
The “Longevity Vitamin” Hypothesis
Researchers have proposed that ergothioneine may qualify as a “longevity vitamin,” meaning a compound whose insufficiency may not cause immediate deficiency symptoms but could impact long-term healthspan and aging.
- Dedicated OCTN1 transport system
- Association with age-related decline
- Support for systems involved in healthy aging
- No obvious acute deficiency symptoms
Cellular Stress Resistance
Laboratory research shows ergothioneine may help cells withstand oxidative stress, heat stress, inflammatory stress, and DNA damage.
What This Means for You: Ergothioneine may support cellular resilience, healthy aging, and long-term longevity protocols.
Benefit #2: Brain Health, Cognitive Function, and Neuroprotection
Ergothioneine’s potential brain health benefits are among the most well-supported and compelling.
Dedicated Brain Transport System
- OCTN1 transporters are highly expressed in brain tissue
- Ergothioneine crosses the blood-brain barrier
- It concentrates in areas important for cognition, including the hippocampus and cerebral cortex
Cognitive Decline Associations
Studies have found that individuals with mild cognitive impairment had significantly lower plasma ergothioneine levels compared to cognitively healthy individuals.
Hatano T et al., Free Radical Research, 2016; doi:10.3109/10715762.2016.1139692
What This Means for You: Ergothioneine may offer support for cognitive longevity, brain health, and neuroprotection.
Support brain health and healthy aging with clean L-Ergothioneine.
Benefit #3: Mitochondrial Health and Cellular Energy
Ergothioneine concentrates in mitochondria, the cellular powerhouses responsible for energy production.
- Supports mitochondrial membrane protection
- Helps protect mitochondrial DNA
- May support cellular energy production
- May support recovery from stress and exercise
What This Means for You: Supporting mitochondrial health is foundational for energy, vitality, and healthy aging.
Benefit #4: Eye Health and Vision Protection
The eyes contain high ergothioneine concentrations, suggesting a protective role in tissues exposed to oxidative stress from light and UV exposure.
- Lens and retina contain significant ergothioneine levels
- OCTN1 transporters are expressed in eye tissues
- Ergothioneine may help protect eye tissues from oxidative damage
What This Means for You: Ergothioneine may support long-term vision health and protection against oxidative stress.
Benefit #5: Cardiovascular Health and Vascular Function
Emerging research examines ergothioneine’s cardiovascular benefits through antioxidant and anti-inflammatory effects.
- Helps protect endothelial cells from oxidative stress
- May support healthy vascular function
- May help maintain vascular flexibility
- Supports mitochondrial function in heart tissue
What This Means for You: Ergothioneine may support cardiovascular wellness as part of a healthy lifestyle.
Benefit #6: Anti-Inflammatory Effects and Immune Support
Chronic low-grade inflammation, often called “inflammaging,” is increasingly recognized as a driver of age-related decline.
Research suggests ergothioneine may help:
- Support balanced inflammatory responses
- Help manage oxidative stress
- Support immune cell protection
- Complement anti-inflammatory lifestyle strategies
Benefit #7: Additional Emerging Benefits
Skin Health
Preliminary research suggests ergothioneine may support skin through antioxidant effects and protection against UV-related oxidative stress.
Metabolic Health
Some research examines ergothioneine’s potential role in metabolic function, glucose metabolism, and insulin sensitivity.
Liver Health
Studies explore ergothioneine’s potential to support liver function, detoxification, and hepatic mitochondrial health.
Gut Health
Emerging research looks at interactions with gut microbiota, gut barrier protection, and possible prebiotic-like effects.
Important Note: These additional benefits have less robust human evidence than the primary benefit areas.
Why the OCTN1 Transporter Makes Ergothioneine Unique
What sets ergothioneine apart from other antioxidants is your body’s dedicated capture and delivery system.
- OCTN1 helps transport ergothioneine into key tissues
- OCTN1 expression is high in the brain, heart, eyes, kidneys, bone marrow, and mitochondria
- This targeted delivery suggests biological importance
The Deficiency Problem: Why Supplementation Matters
Humans cannot make ergothioneine. We depend entirely on dietary intake, primarily from mushrooms.
- Porcini mushrooms contain the highest levels
- Oyster and shiitake mushrooms contain moderate levels
- White button mushrooms contain lower but measurable levels
Because many modern diets contain few mushrooms, supplementation may help provide a consistent daily source.
The 25 mg Dose: Research-Validated Amount
Studies examining ergothioneine’s health effects typically use 5–25 mg daily, with 25 mg being a common supplementation dose in research.
MyGevity’s L-Ergothioneine delivers 25 mg per capsule.
Add the compound your body was designed to capture.
How to Use L-Ergothioneine for Maximum Benefits
Recommended Dosing
- Take 1 capsule, 25 mg, daily
- Can be taken with or without food
- Morning or evening timing is flexible
- Daily consistency helps tissue levels build
Realistic Timeline
- Weeks 1–4: Tissue levels building
- Months 2–3: Cellular protection establishing
- 6+ months: Long-term cumulative protective support
Complementary Stacks
- Ergothioneine + Resveratrol: Supports complementary longevity pathways
- Ergothioneine + NMN: Combines mitochondrial and NAD+ support
- Ergothioneine + NAC: Supports mitochondrial protection and glutathione production
- Ergothioneine + Omega-3s: Supports anti-inflammatory and neuroprotective benefits
Why Purity Matters for Longevity Compounds
When supplementing for long-term health, formulation purity is critical.
- 25 mg pharmaceutical-grade L-Ergothioneine per capsule
- Minimal ingredients: organic tapioca starch, vegetable capsule, and acacia gum
- GMP-certified manufacturing
- Third-party tested for purity and potency
- Free from seed oils, gluten, GMOs, artificial preservatives, colors, and flavors
Safety and Considerations
Ergothioneine has an excellent safety profile and is generally well tolerated.
Standard precautions apply. Pregnant or breastfeeding individuals, anyone taking medications, or anyone with a medical condition should consult a healthcare provider before use.
The Bottom Line: Why Ergothioneine Deserves Attention
Ergothioneine is not about miracle cures or instant results. It is about long-term, preventive support for cellular health, mitochondrial function, brain protection, and healthy aging.
MyGevity’s L-Ergothioneine delivers 25 mg per capsule in a pharmaceutical-grade formulation designed for those who take cellular health and longevity seriously.
Ready to add the compound your body was designed to capture?
25 mg pharmaceutical-grade. GMP-certified. Evolutionarily essential.
Reviewed by Dr. Allen Meglin, Chief Medical Officer at MyGevity
About Our Chief Medical Officer
Dr. Meglin is a board-certified physician specializing in integrative and anti-aging medicine.
Disclaimer: The information provided is for educational purposes only and not intended as medical advice. L-Ergothioneine is a dietary supplement and is not approved to diagnose, treat, cure, or prevent any disease. Research on ergothioneine is emerging and promising, but much of the evidence comes from observational studies, cell research, and animal models. Large-scale human clinical trials are still limited. Individual results may vary. Always consult your healthcare professional before starting ergothioneine supplementation, especially if you are pregnant, nursing, taking medications, or have a medical condition.