What is L Carnitine? L Carnitine is a naturally occurring amino acid derivative that the human body can synthesize itself. It is mainly found in red meat and dairy products. [1] Core Benefits of A follow up to yesterday's post upon recommendation. Food sources of nutrients that support mitochondrial health. #mitochondria #mitochondrialhealth #healthylifestyle #healthyfood #nutrition Acetyl L Carnitine Core Nutritionals Source Naturals Acetyl L Carnitine Tablets 500mg, 120 ct Smith's Food and Drug