L-Glutamine is a non-essential amino acid. It is very abundant (it accounts for almost 2/3 of the amino acids that form muscle protein) and is widely used by muscles, but it is produced in limited quantities by the human body. It is therefore important to ensure an adequate intake of food and, if necessary, food supplements. Athletes who train particularly hard should consider supplementing their diet with L-Glutamine 6000 for best results. L-Glutamine is one of the 20 naturally occurring amino acids (called protein building blocks) and is the most abundant in the human body. It is extremely important for the proper functioning of the body as it plays a major role in different metabolic reactions. Muscles that have undergone very intense or long efforts, such as weight training or prolonged endurance sports, and have entered the so-called catabolic phase (the period during which the muscles deteriorate) must rebuild the damaged fibers. During this recovery phase, it is extremely important to ensure that an adequate supply of glutamine is available to ensure optimal results.