Benefits of L Carnitine for PCOS Landys Chemist PCOS Nutrition Center L Carnitine (120 Capsules) How L Carnitine Supports Fat Metabolism in PCOS Oana Posts Amazon.com: Nutrex Research L Carnitine 3000 (31 Servings, Berry Blast) Liquid Shots, Stimulant Free Supports Muscle Recovery For Men and Women : Health & Household L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy. Adding L carnitine to antagonist ovarian stimulation doesn't improve the outcomes of IVF ICSI cycle in patients with polycystic ovarian syndrome: a double blind randomized clinical trial Journal of Ovarian Research Springer