Glutaminic acid is an amino acid that is commonly found in plants and animals. It is also known as glutamate, which is a neurotransmitter in the central nervous system. Glutaminic acid is an important building block for proteins and is used in many metabolic processes throughout the body. Other synonyms for glutaminic acid include L-glutamic acid, 2-aminopentanedioic acid, and glutamic acid hydrochloride. It is also sometimes referred to as GABA or gamma-aminobutyric acid, although this is technically a different molecule. Overall, glutaminic acid is a crucial nutrient for the human body and has many important functions.