Efficacy and Safety of Coenzyme Q10 in Idiopathic Male Infertility: A Systematic Review and Meta-Analysis of Randomized Trials

Purpose

Despite numerous studies on coenzyme Q10 (CoQ10) as a treatment for idiopathic male infertility (IMI), clear clinical guidance remains lacking. This systematic review and meta-analysis (SRMA) aimed to evaluate the efficacy of CoQ10 and determine the optimal dose, formulation, and treatment duration compared to placebo or other therapies. Materials and Methods: We searched PubMed, Science Direct, and Cochrane Library using relevant keywords to identify studies assessing CoQ10’s effects on sperm parameters, seminal CoQ10 levels, and clinical pregnancy rates in men with IMI. Study quality was assessed using the Revised Cochrane Risk of Bias tool (RoB2), and meta-analyses were conducted using Review Manager 5.4. The protocol was registered in PROSPERO (CRD42024513515).