Carnitine for the treatment of idiopathic asthenospermia: a randomized, double-blind, placebo-controlled trial

ObjectiveTo determine the effect of oral carnitine supplementation on the semen parameters of men with idiopathic asthenospermia.DesignProspective, randomized, double-blind placebo-controlled study.SettingAcademic tertiary referral centers.Patient(s)Male patients presenting with infertility and with sperm motility of 10%–50% were selected.Intervention(s)Patients were randomized to 24-week treatment arms of oral carnitine (2,000 mg L-carnitine...