L-Arginine-Alpha-Ketoglutarate Non-GMO GMP Quality Assured A Dietary Supplement Vegetarian/Vegan AAKG (Arginine Alpha-Ketoglutarate) is a metabolic derivative of Arginine, which is a conditionally essential amino acid that has a number of vital roles in the body. Arginine plays a pivotal role in the urea cycle, helping to rid the body of excess ammonia. This amino acid also important in protein synthesis as well for the support of healthy immune function. As AAKG, this form of Arginine is a key player in amino acid metabolism.