CoQ10: what the evidence actually shows

Reviewed by Substrate editorial, Independent research collective · 2026-07-16

Evidence by outcome

energy / fatiguegrade Ahigh certainty— Meta-analysis of 13 RCTs (n=1,126) found CoQ10 supplementation significantly reduced fatigue scores versus placebo (Hedges' g = -0.398, 95% CI: -0.641 to -0.155, p = 0.001). Benefits were consistent in healthy and diseased participants, and greater reductions were associated with higher daily doses and longer durations. The effect was significant for CoQ10-only formulations but not CoQ10 compounds.

migraine frequencygrade Bmoderate certainty— Meta-analysis of RCTs: CoQ10 supplementation reduced migraine attack frequency (and, in some trials, duration) versus placebo; effect on migraine severity was less consistent. Trials are relatively small, so certainty is moderate rather than high.

energy / fatiguegrade Clow certainty— limited evidence for general fatigue; clearer in specific conditions (e.g., statin myalgia, mitochondrial disorders)

heart healthgrade Dvery-low certainty— UK HTA review of 26 RCTs (n=2250) in heart failure: mortality RR 0.68 but CI crosses null (0.45-1.03); authors say stronger evidence is needed before this could inform prescribing.

longevity / agingnot well studiedvery-low certainty— no human evidence that CoQ10 extends lifespan

People say · Evidence shows

“CoQ10 boosts energy and slows aging”

aheadextrememarketing claim

What it probably doesn't do

CoQ10 for heart health — Grade D, UK HTA review of 26 RCTs (n=2250) in heart failure: mortality RR 0.68 but CI crosses null (0.45-1.03); authors say stronger evidence is needed before this could inform prescribing..

Grade history

2026-07-16C → CCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid-36091835] details →

Re-review cadence: every 12 months (Grade A/B) · next scheduled by 2027-07-16 · methodology v1.

By outcome — the money pages

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Is CoQ10 hype?

sources: PMID:36091835 · PMID:33402403 · PMID:36091835 · PMID:35076012

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Reuse under CC-BY 4.0 with attribution to evidencebased.info.

Plain-text citation

Substrate. CoQ10: what the evidence actually shows. https://evidencebased.info/interventions/coq10. Updated 2026-07-16.

BibTeX

@misc{substrate_fointerventionscoq10,
  author = {Substrate editorial},
  title  = {CoQ10: what the evidence actually shows},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/coq10},
  note   = {evidencebased.info}
}