Frontiers The effect of L carnitine supplementation on lipid profile in adults: an umbrella meta analysis on interventional meta analyses The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Benefits of Acetyl L Carnitine Simply Supplements The Importance of the Fatty Acid Transporter L Carnitine in Non Alcoholic Fatty Liver Disease (NAFLD) July 2020 : r ketoscience There's a reason L carnitine keeps showing up in PCOS research Because PCOS is closely tied to insulin resistance, inflammation, and metabolic dysfunctionand L carnitine plays a role in energy metabolism and fat utilization.