Chronic oral administration of L carnitine induces testicular injury: in vivo evidence International Urology and Nephrology Springer Nature Link Frontiers The Effect of Antioxidants on Sperm Quality Parameters and Pregnancy Rates for Idiopathic Male Infertility: A Network Meta Analysis of Randomized Controlled Trials Effect of dietary L carnitine on ejaculate volume (mL) (mean SE) of Download Table Frontiers Exogenous L carnitine Administration Ameliorates the Adverse Effects of Heat Stress on Testicular Hemodynamics, Echotexture, and Total Antioxidant Capacity in Rams Carnitine for the treatment of idiopathic asthenospermia: a randomized, double blind, placebo controlled trial ScienceDirect Vitamin Supplements for Male Fertility: A 2026 Guide AlabamaAgeline.gov