Whey Protein Isolate 97% is the most exceptionally high quality whey protein available today. A staggering 99% of its calories come from protein & it contains 0g of carbohydrates & less than 01.g of fat per serving! Whey Protein Isolate 97% is also lactose free & contains over 12% leucine. Quite simply, in terms of nutritionals, no other whey isolate compares.