Whey Protein Isolates. Primary Source. 24G Protein. 5.5G BCAAs. 4G Glutamine & Glutamic Acid. Naturally and Artificially Flavored. 73 Servings. The True Strength of WheyWhey Protein Isolates (WPIs) are the purest form of whey protein that currently exists. WPIs are costly to use, but rate among the best proteins that money can buy. Thats why theyre the first ingredient you read on the Gold Standard 100% Whey label. By using WPI as the primary ingredient along with premium ultra-filtered whey protein concentrate (WPC), were able to pack 24 grams of muscle-building protein into every serving. ONs attention to detail also extends to mixability. This superior quality powder has been instantized to mix easily using a shaker cup or just a glass and spoon. Theres no doubt that this is the standard by which all other whey proteins are measured. Beyond The Basics. 77% Protein by Weight (24g of Protein per 31g Serving Size). Whey Protein Isolates (WPI) Main Ingredient. Whey Protein Microfractions from Whey Protein Isolate and Ultra-Filtered Whey Protein Concentrate. Over 4 Grams of Glutamine & Glutamic Acid in Each Serving. More than 5 Grams of the Branched Chain Amino Acids (BCAAs) Leucine, lsoleucine, and Valine in Each Serving. The Gold Standard for Protein Quality.