– L-Arginine α-ketoglutarate, often abbreviated as AAKG, is a dietary supplement that combines L-Arginine and α-ketoglutarate, a critical intermediate in the Krebs cycle. L-Arginine is a precursor to nitric oxide, which helps regulate blood flow and promotes vasodilation, while α-ketoglutarate is involved in energy production and protein synthesis. Together, these compounds are believed to support improved muscle recovery, increased endurance, and enhanced athletic performance.