Country Life L-Glutamine 1000 mg with B-6,  Tablets, 60-Count
Glutamine is an important amino acid that may help to maintain muscle, boost the immune system, support gastrointestinal health, and sustain healthy growth hormone levels, and supply energy to the brain. l-glutamine is thought to have a positive effect for increased concentration, this amino acid is known to play an important role in helping to combat anxiety and stress, elevate energy levels in the brain and increase mental alertness.