L Carnitine helps shuttle fatty acids into the mitochondria (the power plants of your cells) where they can be burned for energy. It's often used in fat metabolism and energy support formulas. Mitochondrial control of fuel switching via carnitine biosynthesis Science Carnitines as Mitochondrial Modulators of Oocyte and Embryo Bioenergetics Role of carnitine in disease Nutrition & Metabolism Springer Nature Link Frontiers Carnitine Traffic in Cells. Link With Cancer