Creatine vs L Carnitine: Which Supplement Fits Your Goals? The World Anti Doping Agency filed a brief in the Valieva case stating that the mention on the form of L carnitine and Hypoxen, though both legal, undercuts the argument that a banned substance, Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link Creatine + Tone & Define l Carnitine reduces reactive oxygen species endoplasmic reticulum stress and maintains mitochondrial function during autophagy mediated cell apoptosis in perfluorooctanesulfonate treated renal tubular cells Scientific Reports