SKU: 93004341379

L-Ergothioneine - 25 mg, 30 capsules

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Description

L-Ergothioneine - 25 mg, 30 capsulesErgothioneine is a powerful amino acid that helps fight the signs of aging and supports numerous aspects of health. Supports longevity by aiding in telomere length maintenence 1 Combats oxidative stress in the brain to support cognition 2 Protects the heart and is associated with reduced cardiovascular mortality 3 View Certificate of Analysis Research Supported Benefits: Supports Longevity. Research shows that ergothioneine supports longevity by

Ergothioneine is a powerful amino acid that helps fight the signs of aging and supports numerous aspects of health.

  • Supports longevity by aiding in telomere length maintenence 1
  • Combats oxidative stress in the brain to support cognition 2
  • Protects the heart and is associated with reduced cardiovascular mortality 3

View Certificate of Analysis

Research-Supported Benefits:

Supports Longevity. Research shows that ergothioneine supports longevity by protecting against accelerated telomere shortening. (1) Longer telomeres are a powerful predictor of increased lifespan and healthspan. (4)

Maintains Cellular Health. Ergothioneine has been shown to reduce levels of oxidative stress. High levels of oxidative stress may contribute to DNA damage, a decline in ATP (cellular energy) production and elevated inflammatory markers. (5)

Promotes Heart Health. By reducing oxidative stress, ergothioneine exhibits powerful cardioprotective properties. Oxidative stress is associated with accelerated aging of heart cells, studies show ergothioneine reduces cardiac-related mortality risk. (6)

Enhances Brain Health. Low levels of ergothioneine are correlated with neurodegeneration and cognitive impairment. (7) Animal studies have found that administration of ergothioneine improves markers of memory and mood. (8)

Improves Performance. Research suggests ergothioneine may improve markers associated with fitness and muscle health. One study found that administration ergothioneine to mice increased time to exhaustion during aerobic activity and enhanced protein synthesis post-exercise. (9)

References:

1. Samuel P, Tsapekos M, de Pedro N, Liu AG, Casey Lippmeier J, Chen S. Ergothioneine Mitigates Telomere Shortening under Oxidative Stress Conditions. J Diet Suppl. 2022;19(2):212-225. doi:10.1080/19390211.2020.1854919

2. Wijesinghe P, Whitmore CA, Campbell M, et al. Ergothioneine, a dietary antioxidant improves amyloid beta clearance in the neuroretina of a mouse model of Alzheimer's disease. Front Neurosci. 2023;17:1107436. Published 2023 Mar 14. doi:10.3389/fnins.2023.1107436

3. Dare A, Elrashedy AA, Channa ML, Nadar A. Cardioprotective Effects and in-silico Antioxidant Mechanism of L-Ergothioneine in Experimental Type-2 Diabetic Rats. Cardiovasc Hematol Agents Med Chem. 2022;20(2):133-147. doi:10.2174/1871525719666210809122541

4. Heidinger BJ, Blount JD, Boner W, Griffiths K, Metcalfe NB, Monaghan P. Telomere length in early life predicts lifespan. Proc Natl Acad Sci U S A. 2012;109(5):1743-1748. doi:10.1073/pnas.1113306109

5. Fu TT, Shen L. Ergothioneine as a Natural Antioxidant Against Oxidative Stress-Related Diseases. Front Pharmacol. 2022;13:850813. Published 2022 Mar 18. doi:10.3389/fphar.2022.850813

6. Smith E, Ottosson F, Hellstrand S, et al. Ergothioneine is associated with reduced mortality and decreased risk of cardiovascular disease. Heart. 2020;106(9):691-697. doi:10.1136/heartjnl-2019-315485

7. Wu LY, Kan CN, Cheah IK, et al. Low Plasma Ergothioneine Predicts Cognitive and Functional Decline in an Elderly Cohort Attending Memory Clinics. Antioxidants (Basel). 2022;11(9):1717. Published 2022 Aug 30. doi:10.3390/antiox11091717

8. Ishimoto T, Kato Y. Ergothioneine in the brain. FEBS Lett. 2022;596(10):1290-1298. doi:10.1002/1873-3468.14271

9. Fovet T, Guilhot C, Delobel P, Chopard A, Py G, Brioche T. Ergothioneine Improves Aerobic Performance Without Any Negative Effect on Early Muscle Recovery Signaling in Response to Acute Exercise. Front Physiol. 2022;13:834597. Published 2022 Feb 9. doi:10.3389/fphys.2022.834597

  • Ergothioneine is an amino acid that your body is unable to make on its own but can be obtained from eating foods such as certain types of mushrooms and organ meat.
  • As you age, levels of ergothioneine decline in the body, potentially contributing to a decline in cellular, brain, heart, and muscle health.
  • Ergothioneine is absorbed in the small intestine and transported throughout the body via a specific transporter known as the Organic Cation Transporter 1 (OCTN1). This transporter is highly selective for ergothioneine, allowing it to enter cells efficiently.
  • Once inside the cells, ergothioneine primarily exerts its effects as a potent antioxidant. It works by donating electrons to neutralize harmful free radicals and reactive oxygen species (ROS) that are generated during normal cellular metabolism and in response to environmental stressors.
  • Administration of ergothioneine in animal studies has been shown to reduce oxidative stress, mediate inflammatory markers, and promote cellular, brain, and heart health.
Supplement Facts
Serving Size: 1 Capsule
Servings Per Container: 30
Amount Per Serving %DV
L-Ergothioneine 25 mg
† Daily Value (DV) not established
REV.08.25

  • OTHER INGREDIENTS: Hypromellose (capsule), rice flour.
  • SUGGESTED DAILY USE: Take (1) capsule per day, with or without food.
  • CAUTION: For use by healthy adults only. Please consult your physician before use if you are pregnant or nursing, under the age of 18, or are undergoing treatment for a medical condition. Do not exceed the suggested use. KEEP OUT OF REACH OF CHILDREN. Store in a cool and dry place after opening.
  • Unique Formulation. Compared to the majority of products on the market with lower doses, ProHealth's Ergothioneine contains a clinically effective dose of 25 mg of ergothioneine per serving.
  • Quality Manufacturing Practices. All of our products are manufactured in an FDA-registered, GMP-certified facility.
  • Third-Party Tested in the USA. Every batch is third-party tested in US laboratories to ensure the highest quality, purity and potency. Certificates of Analysis are available.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 93004341379

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Lulu13
Lake Worth, US
★★★★★ 3
Nice size, the quality is changing. It is softer I believe than it used to be.
Flavor Name: Peanut Butter, Size: Large, Flavor Name: Peanut Butter, Size: Large
Not sure if something has changed in the way this product "Barkbone" is made. I bought this many times before and it lasted. Today, on my dogs first day of use, he had chipped through the material, and already destroying it. he has had it for less than 3 hours.
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Reviewed in the United States on September 29, 2025
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BARBARA KING
Port Orchard, US
★★★★★ 5
Very durable
Flavor Name: Steak, Size: X-Large
This is great for an aggressive chewer lady a long time very durable
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Reviewed in the United States on May 6, 2026
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Nina
Louisville, US
★★★★★ 5
My yorkie loves this!!
Size: Extra Small (Pack of 1), Color: Blue
My Yorkie loves this KONG puppy toy! It keeps him entertained and is perfect for his size. It feels durable and well made, and I’m really happy with this purchase.
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Reviewed in the United States on June 2, 2026
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Keeli
Pawtucket, US
★★★★★ 5
Perfect for small senior dogs!
Size: Extra Small (Pack of 1), Color: Pink
So I actually bought this for my senior Bolonka. She has a neurological disorder that does not allow her to have hard bones or treats, plus I am trying to protect her teeth for as long as I can. This is a GREAT toy. I like to fill up the middle with yogurt or peanut butter and things she can lick instead of bite into. This is the PERFECT size for her. She likes to play with it even without a treat on the inside. She just carries it around the house , as its not heavy at all, and throws it around, it is too cute! It is not loud at all, the only noise that comes out is if shes got a ton of saliva and her teeth rub against it. I just pulled it off the packaging, washed it, and it was ready to go. It will last forever with my baby because she doesn't chew hard so I am unsure about the durability for bigger pups or dogs who are heavy chewers. I am so glad I got this for her and I would HIGHLY recommend it!
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Reviewed in the United States on February 13, 2026
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Kindle Customer
Pawtucket, US
★★★★★ 5
Good quality
Size: Small (Pack of 1), Color: Blue
Bought this as an upgrade for my dog's Kong that she got as a puppy and it's just as good as the smaller one. It works really goodBought this as an upgrade for my dog's Kong that she got as a puppy and it's just as good as the smaller one. It works really good
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Reviewed in the United States on June 3, 2026

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