Frontiers L carnitine: new perspectives on the management of preterm infants O2 Pure L Carnitine transfers long chain fatty acids, such as triglycerides into mitochondria, where they may be oxidized to produce energy. In other words L Carnitine helps our body to use fat as Force Factor L Carnitine Liquid, Orange, 16 fl oz (473 ml) L carnitine Supplementation Significantly Improves Lipid Profiles Natural Health Research