Acetyl L-Carnitine 500 mg, 120 Vegetarian Capsules, Jarrow FormulasJarrow Acetyl L Carnitine 500 Pharmaceutical Grade. Antioxidant Protection for the Brain. Suitable For Vegetarians Vegans. Acetyl L Carnitine is a more bioavailable form of L Carnitine, an amino acid found in high concentration in human brain, nerve, liver and sperm cells. Acetyl L Carnitine supports energy production by participating in the metabolism of fatty acids in the mitochondria to yield the universal energy molecule ATP. As an antioxidant,