What Foods Are High in Carnitine? Deficiency Side Effects Long Term Intake of Red Meat in Relation to Dementia Risk and Cognitive Function in US Adults Neurology Carnitine plays crucial role in energy production esp for the heart, fueling mitochondria (cell furnaces). Highest food source? Only animal food, especially red meat; lamb and beef are best. (Redder the Amazon.com: NOW Supplements, L Carnitine 250 mg, Purest Form, Amino Acid, Fitness Support*, 60 Veg Capsules : Health & Household Acetyl L Carnitine: A Supplement to Protect Muscle and Brain Gowing Life What is carnitine? Carnitine is produced in the body from the amino acid lysine and naturally occurs in some foods. It supports energy metabolism and muscle function, which are important factors in