Precision L-Glutamine by Precision NutritionPrecision Nutrition L Glutamine The Multi Benefit Amino Acid Precision Nutritions Precision L Glutamine is an isolated amino acid, which has a variety of important functions within your body. Glutamine is found in most protein containing foods and is actually a non essential amino acid (meaning your body does produce it through its own metabolic processes). That being said, L Glutamine is so abundant in many tissues of the body, it is said to be