GNC Pro Performance L-Glutamine Powder 5000 is a dietary supplement that provides 5000 mg of L-Glutamine per serving. This amino acid is one of the most abundant in muscles and plays a crucial role in protein synthesis and hydrating muscle cells. It supports muscle function, helps fuel muscle performance, and aids in recovery after workouts. The powder blends easily with any beverage or sports drink. Each container offers 90 servings, with a serving size of 5 grams. The product is unflavored and should be stored in a cool, dry place.