---
title: "Ergothioneine — $232K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/ergothioneine"
last_updated: "2026-08-06T20:30:58.694Z"
locale: en
meta:
description: "Niche score 53/100 · $232K/yr market · 75K searches/yr. A concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $232K/yr market · 75K searches/yr. A concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Ergothioneine — $232K/yr Amazon US Niche (2026) - Flapen"
---
# **ergothioneine**
**Worth a look**
Shows low returns (0.0%), but a concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list.
Market size 44Growth 22Conversion 83Competition 21Returns 100Price range 84Avg price 95Brand share 41Review moat 95Quality gap 42
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****109.53**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Incredible****$34.46**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.73–$110.96**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$232K**
$232K/yr · 75K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-6.7%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, ergothioneine is a $232K/yr Amazon United States market (75K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ergothioneine market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$207K–$276K**
- units × avg price
- **Conversion rate**
- **9.0%**
- **Avg BSR**
- **#2,720**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **6.7%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **184 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**12 **▼falling
**Sellers**
**19**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**12%**
- Double Wood Supplements22% - Nutricost21% - Life Extension17% - Real Mushrooms11% - Toniiq9% - GENEIII8% - Open — no brand owns it (6 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -6.7% search growth over the last 90 days.
3K2KSpike '24Holiday '24Spike '25Holiday '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/ergothioneine/trend)
## **Top ergothioneine search terms**
- **ergothioneine**41K/yr-12.5%7.0% conv. - **l-ergothioneine**11K/yr+8.0%7.0% conv. - **ergothioneine supplements**12K/yr-9.4%7.8% conv. - **l ergothioneine**4K/yr+15.1%9.3% conv. - **l ergothioneine supplement**3K/yr-1.3%10.9% conv. - **l-ergothioneine supplement**3K/yr-1.9%10.0% conv. - **ergo supplement**2K/yr+6.4%3.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/ergothioneine/search-terms)
## **Top ergothioneine products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$23K20%$46K30%$70K40%$93K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Ergothioneine Supplement (EGT) 30mg of Pure Plant-Based L-Ergothioneine Per Capsule 60 Count (May Support Longevity and Healthy Aging) Non-GMO Gluten Free Vegan Safe by Double Wood**Double Wood Supplements**$12.73**4.6★208 rev](https://www.amazon.com/dp/B0DJRJQ33H) [2**Nutricost L-Ergothioneine Supplement 30mg 120 Capsules Gluten-Free Vegan**Nutricost**$16.28**4.4★41 rev](https://www.amazon.com/dp/B0GLQRVD73) [3**Life Extension Mega L-Ergothioneine Healthy Aging Amino Acid antioxidant Powerful 25 mg dose L-ergothioneine Gluten-Free Non-GMO Vegetarian 30 Capsules**Life Extension**$26.48**4.4★55 rev](https://www.amazon.com/dp/B0FG9Q665B) [4**Real Mushrooms Ergothioneine Supplement Golden Oyster Mushroom with Beta-Glucans L-Ergothienine Extract Poweder Organic Vegan Non-GMO No Fillers 60 Capsules Mushroom Supplement for Humans**Real Mushrooms**$33.81**4.5★505 rev](https://www.amazon.com/dp/B08KFQFMRN) [5**Ergothioneine with Clinically Studied MitoPrime - High Potency 30mg with 98% Purity - Fermentation-Based L Ergothioneine Supplement - Longevity and Immune Support - Third-Party Tested 90 Capsules**Toniiq**$19.76**4.3★133 rev](https://www.amazon.com/dp/B0DMWG239Z)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost L-Ergothioneine Supplement 30mg 120 Capsules Gluten-Free Vegan**Nutricost**$16.28**41 rev5mo ago](https://www.amazon.com/dp/B0GLQRVD73) [**MyGevity Ergothioneine 25mg Zero Synthetic Fillers 99.9% Pure Fermented**MyGevity**$24.04**38 rev7mo ago](https://www.amazon.com/dp/B0G7PPPRQY) [**Codeage Liposomal Ergothioneine+ Glutathione Vitamin C 30 Capsules**Codeage**$29.30**27 rev7mo ago](https://www.amazon.com/dp/B0G6YHQ1SW) [**Life Extension Mega L-Ergothioneine Healthy Aging Amino Acid antioxidant Powerful 25 mg dose L-ergothioneine Gluten-Free Non-GMO Vegetarian 30 Capsules**Life Extension**$26.48**55 rev1y ago](https://www.amazon.com/dp/B0FG9Q665B) [**GENEIII L-Ergothioneine Supplement 30mg - Fermentation-Based 99.99% Purity Antioxidant - Clinically Studied to Support Longevity Restful Sleep & Healthy Aging - Vegan & Non-GMO - 120 Capsules**GENEIII**$110.96**63 rev1y ago](https://www.amazon.com/dp/B0FBX7L32L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MyGevity Ergothioneine 25mg Zero Synthetic Fillers 99.9% Pure Fermented**MyGevity**$24.04**4.6★**▲ 206%**](https://www.amazon.com/dp/B0G7PPPRQY) [**Nutricost L-Ergothioneine Supplement 30mg 120 Capsules Gluten-Free Vegan**Nutricost**$16.28**4.4★**▲ 122%**](https://www.amazon.com/dp/B0GLQRVD73) [**GENEIII L-Ergothioneine Supplement 30mg - Fermentation-Based 99.99% Purity Antioxidant - Clinically Studied to Support Longevity Restful Sleep & Healthy Aging - Vegan & Non-GMO - 120 Capsules**GENEIII**$110.96**4.6★**▲ 71%**](https://www.amazon.com/dp/B0FBX7L32L) [**Codeage Liposomal Ergothioneine+ Glutathione Vitamin C 30 Capsules**Codeage**$29.30**4.7★**▲ 66%**](https://www.amazon.com/dp/B0G6YHQ1SW) [**XYMOGEN MitoPrime - L-Ergothioneine Supplement - Mitochondrial & Cellular Antioxidant Support - Gluten-Free Vegan & Non-GMO - 30 Capsules**XYMOGEN**$44.50**4.5★**▲ 53%**](https://www.amazon.com/dp/B0BVX8YHMR)
**~~View all trending →~~**
## **What buyers say about ergothioneine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**9%
*“an awesome supplement with SO many great benefits”*
**Quality-Overall**9%
*“Quality Standard: Manufactured in a GMP-certified facility”*
**Ingredients-Overall**8%
*“clean ingredient profile”*
**Ease Of Chewing/Swallowing**7%
*“The capsules are easy to take”*
**Dosage**6%
*“This particular supplement is an easy one-capsule-a-day dosage”*
**Side Effects**6%
*“I haven't had any sort of bad reaction to it”*
**Value For Money**5%
*“Decent value”*
**Nutritional Content**5%
*“health so finding these supplements was a big plus”*
**Vegan/Organic**5%
*“Another great high-quality vegan”*
**Locally Manufactured**4%
*“Made in the USA”*
### **What buyers complain about **
**Dosage**10%
*“Unfortunately, when I did due diligence before taking the product I discovered that I can't take it due to potential negative interactions with my medications”*
**Side Effects**6%
*“Strong side effects”*
**Smell**5%
*“It's a very distinct odor”*
**Ingredients-Overall**5%
*“lacks the cofactors found in whole mushrooms”*
**Size-Overall**4%
*“The bottle is huge”*
**Functionality-Overall**3%
*“Didnt have an effect on me”*
**Certifications**1%
*“I found out that this product received a Not Approved test”*
**Nutritional Content**1%
*“lack, in our daily food”*
**Acid Regulator/Stomach Ache Relief**1%
*“a simple pill hit my stomach hard”*
**Magnesium**1%
*“Sterates? Nahhh. Magnesium sterate? Really.... I ordered this to give it a shot, a simple pill hit my stomach hard”*
### **Top return reasons **
**Functionality-Overall**100%
## **Common questions**
- **Is ergothioneine profitable to sell on Amazon United States?**
- The niche generates $232K/yr across 15 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -6.7%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the ergothioneine niche?**
- 12 brands and 19 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in ergothioneine?**
- Top complaints mined from reviews: Dosage, Side Effects, Smell. The return rate is 0.0%.
- **When does demand for ergothioneine peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the ergothioneine niche?**
- Listings span $12.73–$110.96; the average listing price is $34.46 (sweet spot $15–$100). The average incumbent carries 110 reviews — the moat a new listing must climb.
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