Nucleo Longevity
ENIT

PQQ (Pyrroloquinoline quinone)

PQQ · pyrroloquinoline quinone

A compound promoted to grow new mitochondria for energy and aging.

TypeSupplement / dietary

The grade answers: What does the human evidence support for: Mitochondrial biogenesis?

Grade

C

Limited

The grade rates evidence quality — it is not advice to take or buy.

Class
Mitochondrial cofactor
Primary use
Mitochondrial biogenesis
Evidence strength
low
Last reviewed
2026-07-01

Bottom line

The 'makes new mitochondria' story rests mostly on cell and animal work, plus a handful of small human trials on fatigue and cognition. Interesting, early, and often bundled with CoQ10 on theory.

What the evidence says

PQQ is proposed to stimulate mitochondrial biogenesis — the creation of new mitochondria — which underlies its energy and anti-aging marketing. Most of this evidence is preclinical; human data are limited to small trials reporting effects on fatigue, sleep or some inflammatory/metabolic markers, with inconsistent quality. It is frequently sold combined with CoQ10 on the assumption of synergy that outcome trials haven't confirmed. Grade C: a plausible mitochondrial mechanism with sparse, early human evidence.

Key studies

  1. [1]
  2. [2]

    PQQ and mitochondrial biogenesis (preclinical) · preclinical

    Mechanistic basis, mostly cell/animal.

    Open on PubMed ↗
  3. [3]

    PQQ review · review

    Summarises the (early) evidence base.

    Open on PubMed ↗
See all studies on PubMed ↗

Scoped PubMed search, not a curated bibliography: the individual PMIDs for this entry have not yet been verified one by one. For that reason it is not used to support a high grade and is awaiting review.

Mechanism

Proposed to activate signalling (e.g. PGC-1α pathways) that promotes mitochondrial biogenesis, alongside redox/antioxidant activity.

Safety

Well tolerated in the small trials to date; long-term safety is not well characterised given limited human exposure data.

Dosage context

Human trials commonly use ~10–20 mg/day, often with CoQ10. Optimal dose and any real benefit of the combination are not established.

Examples of application

  • Taken ~10–20 mg/day, often bundled with CoQ10.
  • The 'new mitochondria' pitch is mostly preclinical.
  • Treat the CoQ10 combo as marketing until outcomes say otherwise.

From the field

PQQ's 'grow new mitochondria' pitch is mostly a mouse-and-dish story with a few small human trials tacked on. We grade it C and treat the CoQ10 bundling as marketing until outcomes say otherwise.

Related molecules

Coenzyme Q10CUrolithin AC

Follow this entry

We'll tell you if the grade for PQQ (Pyrroloquinoline quinone) changes.

One review a week: new evidence, grade changes and what was updated. No hype, no promotions disguised as news.

How we assign grades → Method