Whey Protein Isolates (WPIs) are the purest form of whey protein that currently exists. That's why they're 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), we're able to pack 24 grams of protein into every serving to support your muscle building needs after training. This superior quality powder has been proved 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. Each serving of Gold Standard 100% Whey contains 24 g of premium whey protein to support muscle growth and recovery, 5.5 g of naturally occurring BCAAs and many other minerals, but just 1 g of fat, 1 g of sugar and 3 g of carbs.