Whey Protein Isolate (WPI) Main Ingredient Whey Protein Microfractions from Whey Protein Isolates & Ultra-Filtered Whey Protein Concentrate Over 4 Grams of Glutamine & Glutamic Acid in Each Serving More Than 5 Grams of the Naturally Occurring Branched Chain Amino Acids (BCAAs) Leucine, Isoleucine, and Valine in Each Serving World’s #1 Whey Protein (Based on 2015 sales through the internet and major sports nutrition specialty retailers.)