Foods High in L Carnitine for Energy and Health Marnys L Carnitine drink powder 150 g BioTechUSA 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 Carnitine Rich Foods: Understanding L Carnitine and Its Benefits Loyal L Carnitine Pure Powder, 3 oz (85 g)