The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Supplements don't replace the workbut they can support it L Carnitine helps your body turn fat into usable energy, so you can push harder and recover better. Consistency first. Supplements second. Results L Carnitine isn't magic but it can be a powerful tool when your training and nutrition are already dialed in Here's why I like it Supports fat metabolism L Carnitine helps L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians L Carnitine