Quinone research supplement · Fact sheet
Pyrroloquinoline quinone
Also known as PQQ · PQQ disodium salt
PQQ is a quinone studied for metabolic biomarkers and cognition. Small human studies show signals on some measures, but they do not demonstrate human mitochondrial expansion, dementia prevention or longer life.
What is Pyrroloquinoline quinone?
The free compound and disodium salt differ in formula mass. Studies often use a specific disodium-salt preparation.
Mitochondrial biogenesis findings in mice are not direct proof of the same outcome in people.
Benefits & claims
Interest in Pyrroloquinoline quinone spans aging and energy, cognition and sleep. Study findings apply to the named formulation and population.
What the evidence supports
- The short human study changed some inflammatory and urinary metabolic measures without changing standard clinical indices.
- The cognition trial reported several test improvements but needs larger independent replication.
- Neither study establishes a meaningful longevity or disease-prevention effect.
Research areas
- Formulation-specific human outcomes
- Mechanistic research
Dosage & frequency
Human study contextThis is an exposure from a named human study, not a generally established treatment or enhancement regimen.
mnemoPQQ randomized cognition study
Healthy Japanese adults enrolled in a cognitive-function study; 64 randomized
- Amount
- 21.5 mg of the studied PQQ disodium salt
- Frequency
- Daily for 12 weeks
- Route studied or labeled
- Oral
Salt mass is not automatically the same as free PQQ mass. The study evaluated test performance, not dementia prevention or lifespan.
How to read these amounts
An approved regimen belongs to a specific product, indication, and population. A study regimen describes what researchers tested; it does not establish a prescription or a safe self-use protocol. Products, routes, and formulations are not interchangeable. A prescriber uses the full label and individual clinical circumstances.
Personal accounts may describe amounts, schedules and outcomes beyond clinical research. They do not establish a regimen. Read the reported experiences
Formulations, interactions & practical context
- Identity and pharmacology
- The free compound and disodium salt differ in formula mass. Studies often use a specific disodium-salt preparation.Dietary pyrroloquinoline quinone (PQQ) alters indicators of inflammation and mitochondrial-related metabolism in human subjects. Effect of Dietary Pyrroloquinoline Quinone Disodium Salt on Cognitive Function in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study.
Formulation differences
- Mitochondrial biogenesis findings in mice are not direct proof of the same outcome in people.
Interactions & precautions
- The reviewed sources do not establish a comprehensive human interaction profile for this exact substance or combination.
What is still unresolved
- Reproducibility in larger independent trials
- Long-term outcomes and adverse effects
- Equivalence of different preparations and interaction profiles
Side effects & risks
- Small studies reporting tolerability cannot establish rare adverse events or long-term safety.
- Human drug-interaction data are incomplete for different PQQ forms and combination products.
This is a summary of the cited evidence, not a complete product label. A lack of human safety data does not establish safety.
Clinical research
Early human evidenceA ten-person short study measured biomarkers. A separate 64-randomized-person trial reported cognitive-test improvements after a product-specific 12-week exposure.
Studies
Ten-person pharmacokinetic and short biomarker studies.
64 randomized volunteers; 58 completed a 12-week cognition trial.
Personal experiences
Reports describe what someone noticed. They cannot establish cause, typical results, or how often a side effect happens. Amounts and schedules describe the individual account, not an effective or safe dose. Product identity and strength may be unverified, and missing details are left explicit.
No attributable personal accounts were found in the sources reviewed.
Approval status
No FDA-approved Pyrroloquinoline quinone drug indication is established for the supplement uses discussed here. Supplement availability is not FDA approval of efficacy or safety.
No FDA-approved product for this entry
Approval covers the labeled product, use and population. A trial phase does not establish success; a stopped program is not ongoing research.
- Dietary pyrroloquinoline quinone (PQQ) alters indicators of inflammation and mitochondrial-related metabolism in human subjects.
- Effect of Dietary Pyrroloquinoline Quinone Disodium Salt on Cognitive Function in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study.
- FDA: what approval means for supplements
Open questions
- Reproducibility in larger independent trials
- Long-term outcomes and adverse effects
- Equivalence of different preparations and interaction profiles
Summary
Neither study establishes a meaningful longevity or disease-prevention effect.
Sources
Medical evidence and regulatory sources are listed here. Personal reports are linked separately in the experiences section.
- pubmedDietary pyrroloquinoline quinone (PQQ) alters indicators of inflammation and mitochondrial-related metabolism in human subjects.
Ten-person pharmacokinetic and short biomarker studies.
- pubmedEffect of Dietary Pyrroloquinoline Quinone Disodium Salt on Cognitive Function in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study.
64 randomized volunteers; 58 completed a 12-week cognition trial.
- fdaFDA: what approval means for supplements
Dietary supplements are not approved by FDA for safety and effectiveness before marketing.