PQQ (Pyrroloquinoline Quinone): Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
PQQ is a compound studied for mitochondrial health, often paired with CoQ10 for energy and brain support. It has interesting mechanisms (promoting new mitochondria), but human evidence is still early.
What is PQQ?
PQQ (pyrroloquinoline quinone) is a small redox compound found in trace amounts in foods and made by bacteria. It's marketed — frequently alongside CoQ10 — for cellular energy, mitochondrial health, brain function and 'anti-ageing'.
What PQQ is commonly used for
In supplements, PQQ is most often included for brain & memory support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.
How PQQ works
PQQ acts as an antioxidant and, distinctively, appears to stimulate mitochondrial biogenesis — the creation of new mitochondria — which is the basis for its energy and brain-health marketing. This mechanism is well described in lab studies.
What the evidence says
Here's an honest snapshot of what published research suggests about PQQ — including where the evidence is limited.
- PQQ promotes mitochondrial biogenesis and has antioxidant effects in laboratory and animal studies. (PubMed research)
- Early human trials suggest possible effects on energy, fatigue, sleep and some cognitive measures, but they're small and preliminary. (PubMed research)
Typical dosage used in studies
Human studies have used roughly 10-20 mg/day, sometimes with CoQ10. This is research information for context, not a recommendation — confirm what's appropriate for you with a healthcare professional.
Side effects and safety
Appears well tolerated in short studies; long-term human safety data are limited.
Medication interactions and who should avoid PQQ
Medication & safety check
Low known interaction risk; as a newer compound, caution and medical advice are sensible if you take medication.
This is general information, not personal medical advice. If you take any medication, confirm it's safe to combine with PQQ with your doctor or pharmacist first.
Sources & further reading
The summary above is drawn from peer-reviewed research and authoritative references. For general, authoritative background you can also consult:
- PubMed research on PQQ
- NIH Office of Dietary Supplements
- NIH National Center for Complementary and Integrative Health
- MedlinePlus (U.S. National Library of Medicine)
Frequently asked questions
What does PQQ do?
It's an antioxidant that appears to stimulate the creation of new mitochondria (mitochondrial biogenesis).
Should I take PQQ with CoQ10?
They're commonly paired for energy and mitochondrial support.
Is PQQ proven?
Mechanisms are interesting, but human evidence is still early and small.
Is PQQ safe?
It appears well tolerated short term; long-term data are limited.
Related ingredients to explore
Ingredients often studied or formulated alongside PQQ — useful for understanding the full picture of a formula.