NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated August 1, 2026

Supplement × Prescription·Evidence index

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.

Read this first

An evidence index, not guidance.

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.

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.

Metformin and CoQ10 combination therapy: a novel approach to mitigating ischemia-reperfusion injury and cognitive impairment.

Brain injury · 2026 · PMID 41496438

Animal study

“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.”

Mandloi et al. · Authors' conclusion

Names both Coenzyme Q10 and Metformin in its title.

Coenzyme Q10 ameliorates hepatoprotective effect of metformin in experimentally-induced type 2 diabetes mellitus in rats: a functional and histological study.

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.”

Salem et al. · From the abstract

Names both Coenzyme Q10 and Metformin in its title.

Combined effects of metformin and coenzyme Q10 on doxorubicin-induced cardiotoxicity in male wistar rats.

Scientific reports · 2025 · PMID 40596564

Animal study

“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.”

Mahdizadeh et al. · From the abstract

Names both Coenzyme Q10 and Metformin in its title.

Combination therapy with metformin and coenzyme Q10 in murine experimental autoimmune arthritis.

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.”

Jhun et al. · From the abstract

Names both Coenzyme Q10 and Metformin in its title.

Effect of coenzyme Q10 alone and its combination with metformin on streptozotocin-nicotinamide-induced diabetic nephropathy in rats.

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.”

Maheshwari et al. · Authors' conclusion

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:

NutriStack

Track what you actually take.

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.