GNC Pro Performance L-Glutamine 5000 Powder 450 GM is used for supporting muscle building and boosting your immune system. Formulated with L-Glutamine, a key amino acid, this supplement plays a crucial role in protein synthesis, nitrogen balance, and maintaining optimal intestinal function. It’s an ideal choice for athletes or anyone engaged in intense exercise, as it helps replenish glutamine levels depleted during physical activity. The powder is gluten-free, lactose-free, and easily mixes with your favourite beverage for convenient use.