Real Mushrooms, Ergo+ L-Ergothioneine Golden Oyster Mushroom, 10 mg, 60 Caps

Ergo+ delivers L-ergothioneine, a rare antioxidant amino acid found in mushrooms and absorbed by a unique transporter in your body. Supplementing may support healthy aging, cognitive clarity, and resilience to oxidative stress.† Sourced from golden oyster mushrooms and fermentation, Ergo+ offers pure, effective support for long-term wellness.

Suggested Use

Take 1 capsule daily with or without food, or as recommended by your healthcare professional.

Many customers find it easiest to incorporate Ergo+ into their morning wellness routine, paired with other Real Mushrooms best-sellers like Lion’s Mane or Reishi.

Quality & Certifications

Real Mushrooms products are always:

• Rated the #1 Mushroom brand by ConsumerLab
• Made from USDA Certified Organic Mushrooms
• Verified for active compounds, safety, & purity through third-party testing
• Purity-IQ verified for authenticity using nuclear magnetic resonance
• Free of grains, starches, and fillers
• Sourced from mushroom (fruiting bodies) only—never mycelium fermented grain
• Produced in a Good Manufacturing Practices (GMP)-compliant facility

This is our Real Mushrooms Guarantee: no shortcuts, no gimmicks—just real mushrooms.

An Amino Acid for Healthy Aging & Healthy Cognition

L-ergothioneine is a rare antioxidant amino acid found naturally in mushrooms, our richest source. Though our bodies can’t produce it, we’ve evolved a specific transporter to absorb and retain it, underlining its importance in human health. Research shows ergothioneine levels decline with age, and maintaining them may support cognitive health, cellular resilience, and healthy aging.

Ergo+ delivers a clean, natural source of L-ergothioneine from golden oyster mushrooms to help promote mental clarity and long-term well-being.

Real Mushrooms, Not Filler

Most mushroom supplements fail because they’re made without mushrooms: they use mycelium fermented grain. Those products have few beneficial fungal compounds—they’re mostly starch.

We use 100% hot water-extracted mushrooms (fruiting body) to unlock the true full spectrum of beneficial compounds.

Highest-Quality, Organic Ingredients

We partner with experienced mushroom growers using Di Dao 地道 (spiritual homeland) cultivation practices to harvest mushrooms in their geo-authentic environments. Our Ergo+ contain only the real mushroom, grown, extracted, and tested with integrity.

FAQ

Where are your mushrooms from?

All our mushroom extracts are from the leading supplier of organic mushroom extracts: Nammex. They have over 40 years of mushroom growing experience and were one of the first companies to bring organic functional mushroom extracts to North America.

Their ingredients go through rigorous quality control and are tested twice for heavy metals, agricultural chemicals and microbial contamination to ensure they meet all standards for dietary supplements of this nature. All of their extracts are made from certified organic mushrooms (fruiting bodies), organically grown or wildcrafted from deep within mountain regions of China.

Mushrooms used for dietary supplements are seldom grown in North America since they are too expensive. China is the leading supplier of mushrooms worldwide and supplies over 90% of the world’s mushrooms.

It has a rich history of mushroom use as both food and medicine and is the birthplace of mushroom cultivation, with shiitake being farmed in the early 1200s. China is one of the only places in the world where you can get 100% organic mushroom (fruiting body) extracts that can be sold at an affordable price.

What is the difference between capsules and powder?

The products are identical. The only difference is how you want to consume them.

2 capsules is equivalent to roughly a 1/2 tsp of the mushroom powders.

In terms of potency and efficacy, both the capsules and powders are equally effective at delivering.

The capsules are great for travel, whereas the powder can be added to recipes or mixed in coffee, tea or bone broth.

Why do you use mushrooms and not mycelium?

It is extremely important to distinguish the difference between mushrooms and mycelium.

Mushrooms are the “fruit” and reproductive stage of these organisms, while the mycelium is the root system or “body” of the fungus.

Mushrooms contain much higher levels of active compounds like beta-glucans, and there is a large body of research on them. They have also been consumed for thousands of years as food, and many health benefits have been shown from just mushroom consumption.

Mycelium is commonly grown on a grain substrate, and this grain cannot be separated from the mycelium, so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.

For these reasons, Real Mushrooms® only utilizes mushrooms in all of its products, with verified levels of important active compounds like beta-glucans, and is always guarded against starchy fillers like grain.

What is Ergothioneine?

Ergothioneine is a sulfur-based amino acid. Amino acids are important compounds that help the body build proteins. Ergothioneine was discovered in 1909 by Charles Tanret, a French pharmacist and chemist.

This compound holds powerful antioxidant potential, helping to protect cells from oxidative damage. Certain mushrooms, including some of our products, are known to contain high levels of ergothioneine naturally.

Tanret was examining the ergot fungus, which had recently been responsible for destroying crops, and he discovered the compound by using a purification process. The amino acid name ergothioneine originates from this fungus. While the ergot fungus may damage crops, the amino acid it contains helps essential functions in the human body.

How can Ergo+ benefit me?

Ergo+ provides a natural source of L-ergothioneine, an amino acid studied for its role in supporting cognitive health and oxidative stress balance.* These benefits make it a standout among certain types of mushroom products on the market today for supporting healthy aging.

Why do the capsules contain other ingredients?

Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.

We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.

Why do you only list beta-glucans and not polysaccharides?

Beta-glucans are naturally occurring polysaccharides found in mushrooms and are among the most studied compounds for their functional properties*. For this reason, we specifically measure beta-glucan levels on our products.

We do not believe in using polysaccharides as a measure of quality as they can be easily doctored using starch-like substances like grains.

Whether you’re training hard or just looking for more natural energy throughout your day, Cordyceps may help you feel more resilient, active, and ready to perform.