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Double Wood Supplements

PQQ (Pyrroloquinoline Quinone) Supplement

Mitochondrial · Capsule · 60 servings

Label snapshot

What the label says

What the product contains and what one serving costs, according to our catalog. Label amounts are not personal dose recommendations.

Active per serving
PQQ 20 mg
Form
Capsule
List price (catalog, USD)
$19.95
Price per serving
$0.33List price divided by servings per container. A per-day cost only if the label serving is once daily.
Full label record: servings, testing, ingredients
Servings per container
60
Catalog monthly estimate
$9.97
Testing disclosure
Brand lists third-party testing and a public certificate of analysis (CoA)Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Ingredients as listed

IngredientAmount per serving
PQQ20 mg

What to check on the label

  • Which form of the compound the label names (for CoQ10: ubiquinol or ubiquinone) and whether the milligrams refer to that form.
  • Softgel oil carriers are listed under 'other ingredients'. They are not part of the active amount.
  • Branded ingredients (Mitopure, BioPQQ and similar) should be named on the label if the brand claims them.

Amounts are per label serving as recorded in the catalog and are not a recommendation. Testing status reflects what the brand lists. Nothing here is medical advice.

Editorial score and research-dose calculations

These calculations describe our scoring method. They are not a recommended dose or proof of benefit from this product.

6.8/10
Overall score
#18 / 30 in Mitochondrial

Public lab certificate, tested by independent lab, top 10% value.

Read the evidence (1 study)
Add to compareVisit brand site →
Tier 4
Ingredient RCT (different dose)
The ingredient was tested in an RCT but at a different dose, or only in animals.
See the 1 supporting study
  • Nakano et al. 2012 (PQQ)8 weeks of 20 mg/day improved fatigue and quality-of-life scores in adults. Studied at 20 mg. This product: 20 mg.
How we scored this product Show the full breakdown
Dose vs. studies (50%) Why 5.4 of 10. Primary ingredient is PQQ (evidence grade C). It delivers 20 mg, inside the studied range of 10–40 mg. Read the rule → 5.4
Transparency (20%) Why 9.0 of 10. Earned points for public certificate of analysis and independent third-party testing and all doses disclosed. Read the rule → 9.0
Value (10%) Why 9.7 of 10. One day at the trial dose costs about $0.33. That is one of the cheaper options in the catalog (49 of 313 by cost per effective day). Read the rule → 9.7
Formulation (10%) Why 5.0 of 10. No published absorption advantage or disadvantage on file. The default of 5 is not a criticism. Read the rule → 5.0 Default. No absorption data on file.
Safety (5%) Why 8.5 of 10. Baseline 5.0. Third-party testing adds 2.0. Public lab certificate adds 1.5. NSF, USP or Informed Choice certification adds 1.5. Active safety signal subtracts 3.0. Read the rule → 8.5
Community sentiment (5%) Why 7.2 of 10. No external reviews found, so community sentiment defaults to neutral. Community never counts as clinical evidence. Read the rule → 7.2
Composite How this 6.8 is built. 0.50 × 5.4 + 0.20 × 9.0 + 0.10 × 9.7 + 0.10 × 5.0 + 0.05 × 8.5 + 0.05 × 7.2 = 6.8 out of 10. Safety caps applied after. 6.8
6.8 composite
Dose vs. studies50%5.4
Transparency20%9.0
Value10%9.7
Formulation10%5.0
Safety5%8.5
Community5%7.2

Evidence 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. Safety 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 →

Editorial verdict

Quick verdict

6.8 / 10
Best for
Full trial dose, Public lab certificate, Budget-friendly
Avoid if
No major red flags
Full-dose status
Meets trial dose
Price/month
$10
COA status
Public
Biggest caveat
Dose-evidence score of 5.4 is below average for the site.
Nearest alternatives
Catalog snapshot. Check linked sources for current price, label and batch-specific testing.
Price verification
Current price: $19.95
Last price check: Sep 01, 2026
Add to compareVisit brand site →
Layer 2 · Context
In plain language

Why this scored this way

This Double Wood Supplements PQQ (Pyrroloquinoline Quinone) Supplement scores 6.8, making it a mid-tier product with both strengths and weaknesses. It delivers 20mg of PQQ, inside the studied range of 10–40mg with grade C evidence (mostly preclinical, limited human data). Transparency is a clear strength (score: 9.0), with third-party testing and a public lab certificate. At $0.33/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 lab certificate.
  • Value score of 9.7 at $0.33/day.

What drags it down

  • Dose-evidence score of 5.4 is below average for the site.

Why you'd choose it

  • You want good value at $0.33/day.
  • You prioritise tested by independent lab products with public lab certificates.

Why you might skip it

  • You want a product in a different category.
  • You want a cheaper mitochondrial option.
  • You prefer products with more consumer feedback.
Question 1

Does the molecule work?

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

PQQ

Promising cofactor for mitochondrial biogenesis; human evidence remains thin.

1 landmark RCT · US: Dietary supplement · EU: Novel Food authorised
Question 2

Is this bottle good?

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

Dose vs research
100% of trial dose
Meets or exceeds the published effective dose
Cost at trial dose
$0.33/day at trial dose
What one effective daily dose actually costs
Transparency
9.0/10 · Public lab certificate (quality: not assessed)
Independent batch testing confirmed
Consumer signals
No consumer signals collected yet
Operational signal only, never used as clinical evidence
Question 3

What's the catch?

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

No major red flags
Public lab certificate, tested by independent lab, dose within range
No safety, transparency, or dose concerns detected at this time.
Plain English

What’s inside

The main ingredients of this product, in plain language.

PQQ20 mgEvidence C

Promising cofactor for mitochondrial biogenesis; human evidence remains thin.

Read about PQQ →
Layer 3 · Evidence vault

Product data & verification

Hard numbers and independently checked status. Expand each block for its source.

The numbers

Price
$20
per bottle · 60 servings
Dose vs. research
of trial dose 100%
of published effective dose
$ / day at studied dose
$0.33
what one effective daily dose costs
$ / g active
$16.62
per gram of active substance
Independently checked

Data verification

COA status
Public
Evidence grade
C
Per-ingredient breakdown
CPQQ

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

What's inside

Ingredient
Dose in this product
Trial dose
Evidence
PQQ
Promising cofactor for mitochondrial biogenesis; human evidence remains thin.
Nakano et al. 2012
20 mg 100% of trial dose
20 mg
3.6 /5
Low confidence
497 reviews across 1 platforms (4 sources)
Source diversity: 47%
Trustpilot
Praisesupports mitochondrial biogenesis narrativetested by independent lab
Last checked: 2026-08-20

Consumer signals

Consumer signals gathered from 4 platforms.

Medium confidence
Trustpilot

169 reviews · 3.8/5 · mixed sentiment

Praisesupports mitochondrial biogenesis narrativetested by independent lab
Themes

Double Wood's UK Trustpilot page reflects the brand's general mixed-to-positive reputation, applicable to its PQQ supplement within the broader product catalog.

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

Trustpilot International

3.2/5

Same brand profile on Trustpilot country sites: US 3.5 · New Zealand 3.6.

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.

Layer 3 · Evidence vault

Evidence, claims & regulation

Published evidence, claim checks, regulatory status and what could not be verified.

Evidence

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.

PQQNakano et al. 2012
Important to know
PQQPQQ is very expensive to synthesise, so cheap products may under-deliver. Look for third-party COA.

Editorial notes

Standard 20mg PQQ dose, in line with most research and competitor products. Reasonably priced single-ingredient mitochondrial-support capsule.

Go deeper

Where this sits

Actives inside
PQQ
Category
See all in Mitochondrial →
Brand
Double Wood Supplements profile →
Add to compare Visit brand site →
Brand owners

Spot an error?

If you are the manufacturer or brand owner of PQQ (Pyrroloquinoline Quinone) 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 primary sources, and publish any accepted change with a dated note. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.

Request a correction →
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