L Carnitine Oral Bioavailability NOW l Carnitine Supplement Machine learning guided discovery of SLC25A45 as a mediator of mitochondrial methylated amino acid import and carnitine synthesis: Cell Metabolism PDF] Carnitine biosynthesis in mammals. Semantic Scholar L carnitine is a compound that plays a crucial role in the metabolism of fatty acids. It helps transport long chain fatty acids into the mitochondria of cells, where they can be oxidized and used as a