Coenzyme Q10 and Metformin: what the published research says
PubMed indexes 8 records that name Coenzyme Q10 and Metformin together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Coenzyme Q10 and Metformin. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
A study appearing here is not proof that an interaction exists. Two substances can be named together in a paper that never tested them in combination, and a source listed as background may cover only one of them.
Findings are quoted from each abstract as the authors wrote them. NutriStack has not re-analysed, pooled, or reconciled them, and they may disagree with each other.
NutriStack’s own interaction assessment for this pair is not published here. It has not completed qualified-human clinical review, so it is withheld from search. See the publication gate.
Nothing here is medical advice. Decisions about prescription medication and supplements belong with your prescriber or pharmacist, who can see your full regimen.
The research
8 studies naming Coenzyme Q10 and Metformin.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“Co-administration of MT and CQ offered enhanced neuroprotection compared to individual treatments. This benefit may stem from additive or synergistic antioxidant effects and AMPK activation, suggesting potential for combined therapy in ischemic stroke management.”
Names both Coenzyme Q10 and Metformin in its title.
Canadian journal of physiology and pharmacology · 2026 · PMID 41565621
Animal study
“Treatment with either metformin monotherapy or metformin/CoQ10 combination therapy significantly ameliorated the biochemical and histopathological manifestations of MASLD, as well as reduced the expression of BAX and CD68 in the liver. Importantly, combined metformin/CoQ10 therapy exerted a stronger hepatoprotective effect than metformin alone.”
Names both Coenzyme Q10 and Metformin in its title.
“Treatment with metformin and CoQ10 significantly restored the biochemical parameters both in the serum and tissue samples and ameliorated the histopathological damage caused by DOX. In conclusion, the combination of metformin and CoQ10 exerted antioxidant and cardioprotective effects against DOX-induced cardiotoxicity.”
Names both Coenzyme Q10 and Metformin in its title.
Journal of laboratory physicians · 2019 · PMID 31929697
54 participants
“CoQ10 add-on metformin therapy improves endothelial dysfunction and inflammatory changes in patients with T2DM alongside with amelioration of metabolic profile.”
Names both Coenzyme Q10 and Metformin in its title.
Immunopharmacology and immunotoxicology · 2016 · PMID 26681425
Animal study
“These findings suggest that the combination of Met and CoQ10 reduced CIA severity, improving mitochondrial dysfunction compared to Met or CoQ10 alone. These results present a novel, significant preventive targets in RA and may enhance our understanding of its pathogenesis.”
Names both Coenzyme Q10 and Metformin in its title.
Indian journal of pharmacology · 2014 · PMID 25538335
Animal study
“This finding suggests that the treatment with coenzyme Q10 or metformin showed significant renoprotective effect against STZ-nicotinamide-induced DN. However, concomitant administration of both showed a better renoprotective effect than coenzyme Q10 or metformin alone treatment.”
Names both Coenzyme Q10 and Metformin in its title.
Limitations
What this evidence cannot tell you.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
Selection. These records were found by searching PubMed titles and abstracts for both substance names alongside interaction and pharmacokinetic terms. Relevant work that phrases things differently, or is not indexed in PubMed, will be missing.
No effect size. The quoted conclusions are the authors’ words about their own study. We have not extracted effect direction or magnitude, and a single study’s conclusion is not a consensus.
Population mismatch. Findings in healthy volunteers, animals, or a specific patient group may not transfer to you, your dose, or your formulation.
Absence is not safety. Few published studies means the combination is under-studied, which is not the same as established as safe.
Nearby evidence
Other pairs with published research.
Pages covering Coenzyme Q10 or Metformin alongside a different substance.
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Coenzyme Q10, Metformin, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.