L-Arginine-alpha-ketoglutarate 3500 mg per 3 Tablets Highest Potency Available Vegetarian Formula NOW AAKG 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. ; NOW AAKG has paired Arginine with Alpha-Ketoglutartrate, another key player in amino acid metabolism, as well as in energy production.* ; Consumers will find that NOW AAKG compares favorably to similar products on the market, but with the additional benefit of a 3500 mg dose and value pricing.