D-Aspartic Acid is produced naturally in the body from the non-essential amino acid L-Aspartic Acid. Within the human body it is found in high concentrations in areas where hormone production takes place (pituitary gland, hypothalamus, and testes). D Aspartic Acid works by activating the central regions of the brain to release hormones, including growth hormone and test. Supplementing with D Aspartic Acid can therefore increase test levels. As with all LushProtein™ products, Certificates of Analysis (COA) are provided for all key ingredients for assured quality.