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L-Ergothioneine Supplement

Antioxidant · Capsule · 60 portioner#15 / 25 in Antioxidant
5.8
Overall score · out of 10
5.8
Overall score · out of 10
Dose vs. studies3.8
Transparency9.0
Value10.0
Community6.0
Formulation5.0
Tier 4
Ingredient RCT (different dose)
The ingredient was tested in an RCT but at a different dose, or only in animals.
Redaktionellt score, paid $0 No affiliate link Tested by independent lab Public analysintyg Sample received: No
How we scored this product Show the full breakdown
Composite How this 5.8 is built. 0.55 × 3.8 + 0.20 × 9.0 + 0.10 × 10.0 + 0.10 × 6.0 + 0.05 × 5.0 = 5.8 out of 10. Säkerhet caps applied after. 5.8
5.8 composite
Dose vs. studies55%3.8
Transparency20%9.0
Value10%10.0
Community10%6.0
Formulation5%5.0

Bevisning gates dose: the evidence grade sets the ceiling, and the dose decides how much of that ceiling the product reaches. Value = inverse of price-per-trial-dose-day. Community = mean sentiment of external reviews. Säkerhet caps applied after weighting.

This score is our editorial judgment, not a scientific standard. We combine published evidence, dose, price, transparency, and consumer signals into one composite: this is our method, not a peer-reviewed clinical rating. A higher score means a product does better on the factors we weight, not that it is medically proven to work.

Read the full method →

Question 1

Does the molecule work?

The science behind each active ingredient, independent of which brand sells it.

A rare mushroom-derived amino acid that accumulates in tissues under oxidative stress, blood levels drop with age.

2 landmark RCTs · US: GRAS notice filed · EU: Novel food approved (2017)
Question 2

Is this bottle good?

The specific product: dose, price, transparency, and what buyers report.

Dose vs research
300% av studiedosen
Meets or exceeds the published effective dose
Cost at trial dose
$0.11/day at trial dose
What one effective daily dose actually costs
Transparency
9.0/10 · Public analysintyg (quality: not assessed)
Independent batch testing confirmed
Consumer signals
362 reviews across platforms · 4.1/5 · medium confidence
Operational signal only, never used as clinical evidence
Question 3

What's the catch?

Säkerhet flags, transparency gaps, dosing concerns, and recurring buyer complaints.

Buyer complaints
Trustpilot: Customer service and fulfillment complaints; Amazon: Premium price for a niche antioxidant
Recurring themes from consumer review platforms.
Redaktionellt verdict

Quick verdict

5.8 / 10
Best for
Full trial dose, Public analysintyg, Budget-friendly
Avoid if
No major red flags
Full-dose status
Meets trial dose
Pris/month
$10
COA status
Public
Biggest caveat
No significant caveats at this time.
Nearest alternatives

The numbers

Pris
$20
per bottle · 60 portioner
Dose vs. research
Above trial dose 300%
of published effective dose
$ / day at studied dose
$0.11
what one effective daily dose costs
$ / g active
$11.08
per gram of active substance
Independently checked

Data verification

Pris
$20
Verified n/a
Dose
300% av studiedosen
Verified n/a
COA status
Public
Verified n/a
Bevisning grade
C
Per-ingredient breakdown
CErgothioneine
Verified n/a

All product data is checked against original sources. Prices, doses, and testing status are updated when product pages change. Bevisning grades are reviewed when new human RCTs are published. Read how we verify.

What's inside

Ingredient
Dose in this product
Trial dose
Bevisning
Ergothioneine
A rare mushroom-derived amino acid that accumulates in tissues under oxidative stress, blood levels drop with age.
30.0 mg 300% av studiedosen
10 mg
4.0 /5
High confidence
362 reviews across 4 platforms (4 sources)
Source diversity: 92%
AmazonRedditTrustpilotiHerb
PraiseEffective antioxidant support noted by somePure plant-based ergothioneine
ComplaintsCustomer service and fulfillment complaintsPremium price for a niche antioxidant
Last checked: 2026-08-07

Consumer signals

4.09 out of 5 across 362 verified reviews on 4 platforms.

Medium confidence

Consumer sentiment compiled from 4 public sources.

169 reviews · 3.5/5 · mixed sentiment

PraiseEffective antioxidant support noted by some
ComplaintsCustomer service and fulfillment complaints
ThemesBrand-wide Trustpilot rating remains average, driven by service rather than product-specific issues.

Compiled from Trustpilot listing located during research; verified at build time.

193 reviews · 4.6/5 · positive sentiment

PraisePure plant-based ergothioneineGood antioxidant support
ComplaintsPremium price for a niche antioxidant
ThemesAggregated Amazon data shows a strong 4.6/5 rating from 193 reviews for this ergothioneine supplement.

Compiled from Amazon listing located during research; verified at build time.

positive sentiment

PraiseKategori produkter well received for antioxidant/cellular health claims
ComplaintsDouble Wood SKU not directly confirmed on iHerb
ThemesDouble Wood's L-Ergothioneine isn't directly confirmed on iHerb, but the broader ergothioneine category performs well.

Compiled from iHerb listing located during research; verified at build time.

mixed sentiment

PraiseSome biohackers keep it in long-term longevity stacks
ComplaintsUncertainty about noticeable subjective effects
Themesr/Biohackers members debate whether ergothioneine's benefits are noticeable enough to justify long-term use.

Compiled from Reddit listing located during research; verified at build time.

These are consumer sentiment signals. They do not measure whether the product actually works. See our evidence section for that.

What others say (unverified)

No external reviews aggregated yet for this product.

Bevisning

Research behind this product

The studies that established the trial dose and evidence grade for each active ingredient in this product. Click through to read the original paper.

Important to know
ErgothioneineSome produkter dose well below the 5 to 10 mg/day used in trials. Fermented (yeast-derived) sources are more sustainable but check purity/COA.

Redaktionellt notes

One of the more directly longevity-marketed SKUs in the catalog, vendor copy explicitly invokes age-related decline in blood ergothioneine levels. Thin review base (only 1 review at 3.0 rating at time of check) and frequently backordered, so real-world track record is minimal.

In plain language

Why this scored this way

This Double Wood Supplements L-Ergothioneine Supplement scores 5.8, making it below the site average. It delivers the full 30.0mg trial dose of Ergothioneine with grade C evidence (mostly preclinical, limited human data). Transparency is a clear strength (score: 9.0), with third-party testing and a public analysintyg. At $0.11/day it's priced well for what you get.

What drives the score up

  • Quality transparency of 9.0: tested by independent lab with a public analysintyg.
  • Value score of 10.0 at $0.11/day.

What drags it down

  • Dose-evidence score of 3.8 is below average for the site.
  • Ergothioneine (30.0mg is 300% of the 10mg trial dose) is well above the trial dose. More is not always better.
  • Limited consumer feedback (community score: 6.0).

Why you'd choose it

  • You want good value at $0.11/day.
  • You prioritise tested by independent lab produkter with public lab certificates.

Why you might skip it

  • You want a standard dose of ergothioneine (this product is well above it).
  • You want a higher-scoring product (this scores 5.8).
Go deeper

Where this sits

Varumärke owners

Spot an error?

If you are the manufacturer or brand owner of L-Ergothioneine Supplement and believe any data on this page is incorrect (wrong dose, wrong ingredient, wrong price, missing certification, outdated status), you can request a correction.

We review every request, verify it against primär sources, and publish any change with a dated note in the version history above. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.

Request a correction →
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