L Carnitine facilitates the metabolism and transportation of long chain fatty acids in your body. L Glutamine fuels muscles and supports protein synthesis., The only question is which of these pivotal The Emerging Role of l Glutamine in Cardiovascular Health and Disease Acetyl L Carnitine + Glutamine is THE ultimate combo that works as hard as you do. Acetyl L Carnitine helps you tap into fat reserves, using them as energy for your gym session. Acetyl L Carnitine + Glutamine is THE ultimate combo that works as hard as you do. Acetyl L Carnitine helps you tap into fat reserves, using them as energy for your gym session.