For 12 weeks, one group received 1500 milligrams of the amino acids phenylalanine, alanine and arginine (42:38:20) [A-mix] every day. Another group received a placebo.
Results Both groups lost body weight and body fat, but that did not lead to a statistically significant decrease in weight or fat mass in any of the groups. Both groups lost visceral fat, and this decrease was significantly greater among the amino acid cocktail users.
Source:
Combination of phenylalanine, alanine and arginine accelerates fat loss