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.

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.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Review moat

Great109.53

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

Great9.0%

search→purchase rate — share of searches ending in a sale

Market size

Okay$232K

$232K/yr · 75K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay81%

top-5 brand share — brands hold most of the demand

Growth

Bad-6.7%

90-day search growth — must beat 0% to launch

Competition

Bad75%

top-5 click share — a locked-up shelf

Signals Low Review Barrier

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top ergothioneine search terms

ergothioneine41K/yr -12.5%7.0% conv.
l-ergothioneine11K/yr +8.0%7.0% conv.
ergothioneine supplements12K/yr -9.4%7.8% conv.
l ergothioneine4K/yr +15.1%9.3% conv.
l ergothioneine supplement3K/yr -1.3%10.9% conv.
l-ergothioneine supplement3K/yr -1.9%10.0% conv.
ergo supplement2K/yr +6.4%3.8% conv.

All 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.

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

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$12.734.6★208 rev

Nutricost L-Ergothioneine Supplement 30mg 120 Capsules Gluten-Free Vegan

Nutricost$16.284.4★41 rev

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$26.484.4★55 rev

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$33.814.5★505 rev

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$19.764.3★133 rev

Newest

by launch date

Nutricost L-Ergothioneine Supplement 30mg 120 Capsules Gluten-Free Vegan

Nutricost$16.2841 rev

5mo ago

MyGevity Ergothioneine 25mg Zero Synthetic Fillers 99.9% Pure Fermented

MyGevity$24.0438 rev

7mo ago

Codeage Liposomal Ergothioneine+ Glutathione Vitamin C 30 Capsules

Codeage$29.3027 rev

7mo ago

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$26.4855 rev

1y ago

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$110.9663 rev

1y ago

What buyers say about ergothioneine

What buyers praise and complain about, mined from review topics.

What buyers love

Vitamin9%

“an awesome supplement with SO many great benefits”

Quality-Overall9%

“Quality Standard: Manufactured in a GMP-certified facility”

Ingredients-Overall8%

“clean ingredient profile”

Ease Of Chewing/Swallowing7%

“The capsules are easy to take”

Dosage6%

“This particular supplement is an easy one-capsule-a-day dosage”

Side Effects6%

“I haven't had any sort of bad reaction to it”

Value For Money5%

“Decent value”

Nutritional Content5%

“health so finding these supplements was a big plus”

Vegan/Organic5%

“Another great high-quality vegan”

Locally Manufactured4%

“Made in the USA”

What buyers complain about

Dosage10%

“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 Effects6%

“Strong side effects”

Smell5%

“It's a very distinct odor”

Ingredients-Overall5%

“lacks the cofactors found in whole mushrooms”

Size-Overall4%

“The bottle is huge”

Functionality-Overall3%

“Didnt have an effect on me”

Certifications1%

“I found out that this product received a Not Approved test”

Nutritional Content1%

“lack, in our daily food”

Acid Regulator/Stomach Ache Relief1%

“a simple pill hit my stomach hard”

Magnesium1%

“Sterates? Nahhh. Magnesium sterate? Really.... I ordered this to give it a shot, a simple pill hit my stomach hard”

Top return reasons

Functionality-Overall100%

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.