Arginine alpha-ketoglutarate or AAKG is an amino acid derivative commonly marketed as a body building supplement. An intermediate in the metabolism of nitric oxides, no reputable scientific evidence shows any benefits from taking AAKG as a dietary supplement。 The benefits of arginine alpha-ketoglutarate are similar to those of arginine, mostly due to the increased NO production, which increases blood flow to muscles and all parts of the body. Research shows that arginine may help the body repair wounds, may help some kidney disorders, may help decrease the severity or incidence of migraine headaches, and may help improve symptoms of male infertility caused by erectile dysfunction.