PQQ (Pyrroloquinoline quinone) Supplement
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| PQQ8 randomised trials | 20 mg |
Certifications & Testing
Other Ingredients
Hypromellose, Microcrystalline Cellulose
Recommended Use
Suggested Use: As a supplement, take 1-2 capsules per day on an empty stomach. Do not exceed 4 capsules in one day.
Warnings
Warning: Consult your physician before use. Do not use PQQ if you are pregnant, nursing, or under 18 years of age. Discontinue use and consult your doctor immediately if any adverse reactions occur. Do not use PQQ and operate heavy machinery until you know how it affects you. Do not use PQQ if you are pregnant, nursing, or under 18 years of age. Keep out of reach of children. Do not exceed 4 capsu
Frequently Asked Questions
What is Double Wood PQQ (Pyrroloquinoline quinone) Supplement's Formulate score?
Double Wood PQQ (Pyrroloquinoline quinone) Supplement scores 90 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Double Wood PQQ (Pyrroloquinoline quinone) Supplement worth it?
Double Wood PQQ (Pyrroloquinoline quinone) Supplement scores 90/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Double Wood PQQ (Pyrroloquinoline quinone) Supplement?
Each serving contains PQQ (20 mg). Serving size: 1 Capsule(s). 60 servings per container.
How do I take pqq (pyrroloquinoline quinone) supplement?
Suggested Use: As a supplement, take 1-2 capsules per day on an empty stomach. Do not exceed 4 capsules in one day.
Who makes PQQ (Pyrroloquinoline quinone) Supplement?
PQQ (Pyrroloquinoline quinone) Supplement is made by Double Wood. See Formulate's full grade and product lineup for Double Wood on its brand page.
Is Double Wood PQQ (Pyrroloquinoline quinone) Supplement third-party tested?
Double Wood lists the following certifications and testing for this product: Non-GMO, Gluten-Free, Third-Party Tested.
Related Supplements
Track pqq (pyrroloquinoline quinone) supplement in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is PQQ (Pyrroloquinoline quinone) Supplement right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.