4 Ever Fit L-Glutamine - 500 gr supplements your body with 5 grams of pharmaceutical grade, free form amino acid L-glutamine in every scoop. The importance of L-glutamine for athletes lies in the fact it is the most abundant amino acid in muscle cells. During intense exercise muscles can exhaust their energy reserves up to a point of self-degradation. In order to prevent this, L-glutamine is needed after extensive workout to aid muscle repair and recovery. L-glutamine should be taken after intense workout or before bedtime, when muscles have to endure long periods without amino acid intake, to prevent muscle damage and degradation.