What even is carnitine?? Carnitine is a "conditionally" essential amino acid that becomes essential during pregnancy. What does this mean? You must get carnitine through food! The best sources are red L Carnitine Cawells High quality health food products for all people Stay Safe Healthy! L Carnitine Pro Zero flavour Tropical Eric Favre 6 Healthy Foods High in L Carnitine Olimp L Carnitine 1500 Protein Malta L carnitine known as the energy nutrients, provides massive benefits to your heart and works best with Alpha Lipoic Acid.