Glutamic Acid, or glutamate, is a stimulating (excitatory) neurotransmitter found in the human central nervous system. In men, prostate fluid also supplies varying amounts of this amino acid. Glutamic acid is a direct antecedent to the amino acid GABA, and is amongst the most common of all amino acids. It is considered nonessential in nature because of the body’s ability to manufacture it from diet and/or simpler compounds. Humans may also meet bodily requirements of glutamic acid by means of amino acid biosynthesis from, mainly, ornithine and arginine.

Essentially, glutamic acid is a building block and key component of protein and protein-related synthesis. It is equally critical in proper cell functioning throughout the body. Glutamate’s responsibilities include; the metabolism of sugars and fats, fuel for the brain, and the assistance with cognitive functioning in humans.

Glutamic acid does not enter the brain readily; and when it is does enter the brain barrier it does so in minute quantities. However, glutamic acid provides for the transportation of potassium across the protective tissues that prevent foreign substances from entering the brain. This structure in the brain is defined as the blood-brain-barrier. The blood-brain-barrier prevents many lower life forms, such as toxins, from entering the brain and disturbing the immaculate nerve cell environment.