Are L Carnitine and L Carnosine the Same? Anti Aging Systems L Carnitine Tartrate Does It Help Burn Fat? AS IT IS Nutrition Losing weight with L carnitine supplements. Yes or no? Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Role of carnitine in disease Nutrition & Metabolism Springer Nature Link