1500Mg L-Glutamine Plays An Important Role In Muscle Function Pre- & Post-Exercise Pro Performance® Results Supplementation May Help Maintain Glutamine Levels That Have Been Depleted As A Result Of Intense Exercise And May Muscle Function. Glutamine Is Involved In Protein Synthesis And Plays A Pivotal Role In The Body's Nitrogen Balance. It Serves As A Fuel For The Immune System And Maintenance Of Proper Intestinal Function. | Gnc Pro Performance L-Glutamine - 180 Capsules (90 Servings)