Glutamine (l-)

This is a vital function, as GABA is an inhibitory neurotransmitter that produces serenity and relaxation.

Glutamine is an important glycogenic amino acid, meaning that it is essential for helping to maintain normal and steady blood sugar levels. It also assists muscle strength and endurance, and is essential to gastrointestinal function, providing energy to the small intestines. The intestines are the only organ in the body that uses Glutamine as its primary source of energy.

Glutamine has the highest blood concentration of all the amino acids. It is a precursor to the neurotransmitter amino acid Glutamate (Glutamic Acid), and is also involved in DNA synthesis.