Frontiers Antioxidant therapy for infertile couples: a comprehensive review of the current status and consideration of future prospects Acetyl L Carnitine Amazon.com: Total Fertility Advantage for Men by Trusted Science Optimizes Sperm Count Motility and Morphology Includes L Carnitine, Lycopene, CoQ10, PQQ, Folate, N Acetyl Cysteine 180 Capsules : Health & Household Acetyl L carnitine is a form of the amino acid L carnitine, which helps turn fat into energy and occurs in the body naturally. It is thought to help slow down the ageing process l carnitine and l acetylcarnitine supplementation for idiopathic male infertility in: Reproduction and Fertility Volume 1 Issue 1 (2020)