Best Time to Take L Carnitine: Morning vs Evening for Better Fat Loss & Performance The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link Should you eat before taking your supplement? The short answer is: it depends! While some supps serve your body better on an empty stomach, others settle best alongside food. Our Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link