Mitochondrial control of fuel switching via carnitine biosynthesis Science 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 The Right Way to Take L Carnitine to Boost Your Training 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