Enhanced Fat Metabolism L-Carnitine is an amino acid responsible for shuttling fatty acids into the mitochondria for energy production. Enhanced mitochondrial activity results in an increase in clean energy and a boost to fat burning. Convert Stored Fat To Energy Energy Stored As Fat Carnitine Shuttles Fat Cells To Mitochondria Mitochondria Converts Fat Into Energy Increased Fat Burning & Energy Stimulant Free Fat Burn L-Carnitine can be a stimulant-free source of energy that supports increased fatty acid metabolism. Carnitine is a great alternative to synthetic fat burners that rely on stimulant-heavy formulas for increased metabolism. 2X Double Potency L-Carnitine 3000 contains double the amount per serving of our other Carnitine products, providing a potent dosage that ensures biologically active levels of Carnitine are maintained throughout training.