The product "100% L-Glutamine 500 g" by BioTech USA provides pure, unflavored L-glutamine powder, free from fats and carbohydrates. It delivers 5000 mg of L-glutamine per dose and comes in a 500 g container, ensuring a reliable source of this essential amino acid for athletes. It's important to follow usage instructions by mixing 5 g of the powder into water or another beverage, and taking one dose morning and evening, or around athletic activity. Store in a cool, dry place away from direct sunlight.