Packed with whey protein isolates Fast-Acting hydrowhey whey peptides Provides whey protein microfractions More than 5 grams of BCAA's Optimum Nutrition 100% Whey Gold Standard Protein is packed with whey protein isolates and 24g of protein. Whey Protein Isolates (WPI) 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. That's why they're the first ingredient you read on Optimum Nutrition's Gold Standard 100% Whey label. By using WPI as the primary ingredient along with premium ultra-filtered whey protein concentrate (WPC), Optimum Nutrition is able to pack 24 grams of protein into every serving to support your muscle building needs after training. Optimum Nutrition'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 100% Whey Gold Standard is the standard by which all other whey proteins are measured. Also available in a 100% Naturally Flavored Whey Gold Standard Protein version with no artificial colors, flavors, or sweeteners.