Glutamine is the single most abundant amino acid found in skeletal muscle and is widely believed to help with muscle cell volumization. Enhance your training and nutrition program with Glutamine Powder. A recent study showed up to a 400% increase in growth-hormone levels when as little as 2 grams of free-form L-glutamine supplement was consumed! Get ripped and huge! In theory, supplying your body with an adequate, continuous supply of glutamine will prevent the natural breakdown of muscle tissue that occurs when the body systems require more glutamine. It is believed that taking small doses of glutamine a few times a day is more effective than taking large doses. It is suggested to take glutamine supplements after you work out or before you go to bed in order to supply those body systems that require glutamine to function properly.