Helps Reduce Fatigue, Strengthen The Immune System And Preserves muscle Tissue! Met-rx L-Glutamine is the finest amino acid available today!Glutamine is the most abundant amino acid found in the body. This is the very core of the bodies immune system. The immune system plays an important part in the bodies healing or recovery between workouts or training sessions. It's often said that we only grow when we are asleep. This is true. The body does most of its healing or recovery while we sleep.Whatever recovery (growth) the body is unable to capture before the next workout is lost. This is where Glutamine comes in and is so important. Glutamine speeds the bodies recovery process capturing and growing more lean muscle tissue than the body could every do on it's own. Check out these hard-hitting features:L-Glutamine is vital for the proper functioning of the immune systemL-Glutamine is a crucial component of muscle cellsAnti-Catabolic