Infographic: Carnitine Sports Benefits & Mechanisms What Is CoQ10 and L Carnitine, and How Can It Change Your Life? iThrive Essentials Pin by Barbara Bambino on Diet menu ideas Carnitine benefits, Coconut health benefits, Health 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 L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy.