AKG Arginine Alpha Ketoglutarate What Is Arginine Alpha Ketoglutarate? Arginine is an essential amino acid that is used to synthesize protein and nitric oxide inside the body. Arginine alpha-ketoglutarate (AAKG) is a salt of arginine and alpha-ketoglutaric acid that has become widely popular in Men’s Health regimens as well as Sports Nutrition, most notably in bodybuilding, to improve muscle contraction and strength. https://www.nationalnutrition.ca/sports-nutrition/akg-arginine-alpha-ketoglutarate.html #glutaricacid