Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications The effects of L carnitine supplementation on lipid profiles in adults: A systematic review and dose response meta analysis ScienceDirect L carnitine is an amino acid that is produced in your body that helps the body turn fat into energy. Carnitine is found in nearly all cells of the body and researchers have Acetyl L Carnitine for Horses Cell Fuel & Metabolic Support Role of carnitine in disease Nutrition & Metabolism Springer Nature Link The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation