Evidence-basedEditor-reviewedCited sourcesUpdated regularly
Antioxidants

PQQ

Also known as: Pyrroloquinoline quinone, Methoxatin, PQQ disodium

The mitochondrial molecule that may grow new ones — promising energy and cognition data, with human evidence still maturing.

  • By IngredientWiki Editorial Team
  • Fact-checked by IngredientWiki Editorial Team
  • Updated 2026-09-26
  • 2 min read

In short

Pyrroloquinoline quinone (PQQ) is a small quinone molecule found in soil and foods (kiwi, natto, green tea) that functions as a redox cofactor and, intriguingly, stimulates mitochondrial biogenesis — the creation of new mitochondria — by activating pathways like PGC-1α. That mechanism makes it a standout among 'energy' supplements: instead of merely fueling existing mitochondria, it may prompt cells to build more. Human trials are small but consistently positive for energy, sleep quality, and cognitive measures, particularly in middle-aged and older adults. It pairs naturally with CoQ10. Safety is excellent at standard doses, with decades of Japanese use.

  • Quinone cofactor; stimulates mitochondrial biogenesis (PGC-1α)
  • Food sources: natto, kiwi, green tea, parsley
  • Human trials: energy, sleep, cognition — small but positive
  • Classic pairing: CoQ10

What is PQQ?

PQQ occupies a rare niche in supplement science: a molecule with a genuine, potentially game-changing mechanism — mitochondrial biogenesis, the growth of new mitochondria — and a human evidence base that is still catching up. Where CoQ10 feeds the mitochondria you have, PQQ may help you make more of them, which is why the two are so often paired. The trials that exist, though small, are encouraging: improved energy, better sleep, sharper cognition in aging populations. PQQ is a legitimate long-game molecule, not a stimulant, and its users are investing in cellular infrastructure.

Where it comes from

Natural sources

  • Discovered in 1979 as a bacterial redox cofactor
  • Dietary sources: natto (highest), kiwi, green tea, parsley, spinach
  • Body cannot synthesize meaningful amounts; dietary intake is microgram-scale

How it's made

PQQ disodium salt; typical dose 10–20 mg/day (far above dietary intake).

What it does in products

  • Mitochondrial biogenesis activation (PGC-1α pathway)
  • Redox cycling as an antioxidant cofactor
  • Nerve-growth-factor (NGF) support
  • Cellular energy metabolism modulation

Benefits

Energy and fatigue

moderate evidence

Human trials report improved energy, reduced fatigue, and better sleep quality over 8–12 weeks, particularly in older or stressed populations.

Cognition and memory

emerging evidence

Small trials in middle-aged and elderly adults show improvements in attention and memory measures; animal data support neuroprotection.

Mitochondrial function

moderate evidence

The biogenesis mechanism is well established in cell and animal models; human surrogate-marker data are consistent but limited.

Side effects & safety

Mild insomnia at high doses (uncommon)Energy effects can be activating; take earlier in the day.
Headache (rare)Transient.

Safety considerations

  • Insufficient data; avoid supplement doses.
  • None established.
  • Not for: None established

How it's used

In supplements

10–20 mg/day; some protocols use 20 mg twice daily. Effects are cumulative over weeks.

In skincare

Not a topical ingredient.

Regulatory status

  • Sold as a dietary supplement; no FDA-approved disease claims.
  • Not applicable.

Popular products containing PQQ

  • Life Extension PQQ Caps — 20 mg PQQ capsulesLife Extension · Supplement
  • Jarrow Formulas PQQ — 20 mg BioPQQ capsulesJarrow Formulas · Supplement
  • Thorne Memoractiv — Mitochondrial formula including PQQThorne · Supplement

Product names and brands are shown for reference and belong to their respective owners.

The mitochondrial biogenesis mechanism

PQQ activates PGC-1α, the master regulator of mitochondrial biogenesis, prompting cells to produce new mitochondria — an effect documented across cell lines and animal models. This is categorically different from antioxidants that merely protect existing mitochondria, and it frames PQQ's evidence: benefits accumulate over weeks as new organelles come online, not in minutes.

PQQ and CoQ10

CoQ10 shuttles electrons inside mitochondria; PQQ promotes making more mitochondria. The pairing is mechanistically complementary, and combination products dominate the market — a reasonable stack even though head-to-head trials of the combination versus either alone are scarce.

Frequently asked questions

How is PQQ different from CoQ10?

CoQ10 supports electron transport in existing mitochondria; PQQ encourages mitochondrial biogenesis. They address different layers of energy metabolism and stack well.

How long before PQQ works?

Trials measure outcomes at 8–12 weeks. It is not a stimulant — expect gradual improvements in energy and sleep rather than acute effects.

Can I get PQQ from food?

Natto, kiwi, and green tea supply microgram amounts. Supplement doses (10–20 mg) are roughly a thousand-fold higher, so food is not a practical equivalent.

The bottom line

PQQ is a mechanistically distinctive mitochondrial supplement — the rare ingredient that may grow cellular power plants — with promising but still maturing human evidence.

References

  1. PQQ and mitochondrial biogenesis. Journal of Biological Chemistry. https://pubmed.ncbi.nlm.nih.gov/20150448/
  2. PQQ effects on cognition in humans. PubMed Central. https://pubmed.ncbi.nlm.nih.gov/25943451/
  3. PQQ in human energy and sleep trials. PubMed. https://pubmed.ncbi.nlm.nih.gov/22275904/