AAKG Powder (L-Arginine-alpha-ketoglutarate) 7 oz, NOW FoodsNOW AAKG powder contains Arginine, a conditionally essential amino acid that has a number of vital roles in human biochemistry. Arginine plays a pivotal role in the urea cycle, helping to rid the body of excess ammonia. This amino acid is also important in protein synthesis as well as for the support of healthy immune function. AAKG has paired Arginine with Alpha Ketoglutarate, another key player in amino acid metabolism, as well as in energy