Glutamic acid is an amino acid occurring in substantial amounts as a product of the hydrolysis of proteins. Much of this content may result from the presence of a related substance. Glutamine is an amino acid, the monoamide of glutamic acid, and an abundant constituent of proteins. First isolated from plants, e.g., beets, carrots, and radishes. It is very important in cellular metabolism.
Tyrosine is an amino acid that works effectively when taken with glutamine.