Metabolism and Physiological Function of Branched-Chain Amino Acids: Discussion of Session 1
…which means they absorb fat. The BCAAs are not processed via the liver and are absorbed directly into muscle. Ornithine or Arginine might be added to raise creatine levels which raises ATP levels.
BCAAs alone will not build muscle. Muscle is a protein or many chains of amino acids created during translation or protein folding. One has to eat a full spectrum of amino acids in order to build these proteins. Exercise seems to breakdown muscle and is rebuilt stronger and bigger but requires additional protein.