Optimum Nutrition's Glutamine Powder 630 Gr is designed for those looking to replenish their glutamine levels during intense training. It contains 100% pure L-glutamine, essential for protein synthesis and maintaining skeletal muscle. This product comes in instant powder form, unflavored, ideal for mixing with other supplements or shakes without altering their taste. Each container contains 630 grams and provides 5 grams of L-glutamine per serving. It's important to follow the recommended dosage and store the product in a cool, dry place.