Synergistic in vitro inhibition of lung cancer cells using L carnosine capped copper nanoclusters ScienceDirect Acetyl L Carnitine VS L Carnitine: Which One Is Better? 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 Glutathione, L Carnitine and Carnosine. Download Scientific Diagram