From Manufacturer's Label:Gold Standard 100% Whey contains Whey Protein Isolates (WPIs) - the purest form of whey protein that currently exists.  By using WPI as the primary ingredient along with premium ultra-filtered whey protein concentrate (WPC), we’re able to pack 24 grams of muscle- building protein into every serving.ON’s 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. There’s 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.• Contains 73 servings• Double Rich Chocolate flavorManufactured by: Optimum Nutrition