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. Improving diagnosis of mitochondrial fatty acid oxidation disorders European Journal of Human Genetics How carnitine transporters boost reproductive health Carnitine transport and fatty acid oxidation ScienceDirect L Carnitine is Underrated. New Meta Review Reminds Us Why. Carnitine Molecule of the Month September 2003