L Carnitine, 500 mg Veggie Capsules Jarrow Formulas Brain Support Supplement Jarrow Formulas Acetyl L Carnitine 500mg Brain & Energy Support Supplement, Antioxidant L Carnitine is an amino acid found in high concentrations in muscle, heart, and liver tissues. Inside the cells, L Carnitine transports fatty acids into the mitochondria for energy production (i.e., ATP) and reduces Simple Truth Acetyl L Carnitine Capsules 500mg, 30 ct Fred Meyer