USN MICRONIZED GLUTAMINE 500g - Essential Amino Acid for Recovery L-Glutamine is primarily used to promote muscle recovery, especially in the time between workouts. This way, exercise can be intensified in shorter intervals, ensuring greater benefits and effectiveness. Frequent exercise can weaken the bodys defenses and this is because the body needs more L-Glutamine. Common symptoms of overexertion can appear as a decrease in performance. With L-Glutamine, you can avoid them because it has the ability to strengthen the function of the immune system. In addition, it has anticatabolic properties, inhibiting the breakdown of muscle tissue by the body to be used as energy and improving fluid absorption.