Glutamine plays key roles in protein metabolism and cell growth and volume. Glutamine also helps metabolise body fat and support new muscle growth. It is made by our bodies and found circulating in the blood as well as being stored in the skeletal muscles. Glutamine becomes conditionally essential (requiring intake from food or supplements) when the bodies immunity system is placed under acute pressure. Dietary sources of L-glutamine include dairy, fish, certain meats, wheat and certain vegetables. Reflex L-glutamine is a convenient way to supplement your intake of this essential amino acid.