Glutamine is an amino acid that exists in two forms: L-glutamine and D-glutamine.
L-glutamine is the important form, which is produced naturally in the body and found in many foods. It is estimated that a typical diet contains 3 to 6 grams per day.
It provides fuel for immune and intestinal cells and helps keep the connections in the intestines strong.
During times when your body cannot produce optimal amounts, such as during injury or severe illness, supplementing with it may be beneficial for your immune health and recovery.