L-Glutamine by ATP ScienceATP Science L Glutamine As athletes, we know that training and eating are key in reaching our goals. ATP Science L Glutamine is a great addition to your supplement stack as it can maintain and support healthy gut and muscle function, helping us move in the right direction towards our fitness goals. Glutamine is an amino acid which is abundant in muscle tissues and in the gastrointestinal tract. Glutamine is known as a conditionally essential amino