It comprises of 60% free-form amino acids found in the skeletal muscle. Glutamine plays a very important role in metabolism as well as increased recoverability after a workout, enhances immune function and boosts growth hormone levels. As Glutamine plays a very important role in protein metabolism, it is an essential supplement for bodybuilders and other athletes. Research shows that intense workouts can reduce glutamine levels by as much as 50%. Therefore it is crucial to use a glutamine supplement regularly. This product is also highly beneficial to the elderly in preventing muscle deterioration.