Primary Glutamine is designed to support intense training & muscle growth with the original high quality form of the amino acid, pure l-Glutamine. As the most abundant amino acid in skeletal muscle tissue, Glutamine is essential for growth but can easily be depleted by intense training, whether its bodybuilding, powerlifting or any intensive sports training. Primary Glutamine is designed to support immune health, muscle repair & growth in all hard trainers, at an affordable price