Glutamine has become more prominent as new studies reveal its unique contribution to protein synthesis muscle growth anticatabolic prevents muscle tissue breakdown function & growth hormone elevating effects.p Glutamine provides a critical link in muscle metabolism not shared by any other single amino acid. USN s LGlutamine powder is pure pharmaceutical grade LGlutamine in an odorless & tasteless powder. p Glutamine is the most abundant single amino acid in the blood & in the