Gold Whey protein supports lean mass with whey protein isolate, and whey peptides to support lean muscle mass. It helps build strong muscles and adds lean mass. It is best to use before or after exercise, or any time of day. It has been trusted by some of the best athletes all over the world for the past 35 years. It has grams of naturally occurring BCAA’s and glutamic acid, and 4 grams of glutamine with it.