Arab journal of urology2026n = 200 initially, 174 completed follow-up
RCTHuman
This study tested whether CoQ10, L-carnitine (an amino-acid-like nutrient the body uses to turn fat into energy), or both together improve semen quality in men with low sperm count, poor…
Antioxidants (Basel, Switzerland)2025
Narrative ReviewHuman
This review looked at how oxidative stress (cell damage from unstable molecules called reactive oxygen species, a normal byproduct of metabolism that turns harmful when it outpaces the body's defenses)…
Frontiers in pharmacology2024n = 877 (462 CoQ10-treated, 415 untreated/placebo-treated)
Meta AnalysisHuman
This systematic review and meta-analysis set out to assess whether coenzyme Q10 (CoQ10) supplementation improves semen quality and male hormone levels. It pooled data from eight randomized controlled trials involving…