GNC Pro Performance® L-Glutamine 1500 mgGNC 1500 GNC 1500 . : : . : . : . : (1500 ). : (). : 2 4 . : . . . : . . GNC Pro Performance L Glutamine 1500 mg GNC Pro Performance L Glutamine is a dietary supplement providing 1500 mg of L Glutamine per serving, an amino acid that plays a crucial role in supporting muscle function pre and post exercise. Product Features: Muscle Function Support: Helps maintain glutamine levels that may be depleted due to intense exercise, supporting muscle