Whey Protein Isolate 2O is a low-calorie, low-carb protein shake packed with calories from the purest whey protein isolate, rich in muscle-building amino acids, and containing 30% of the protein from your daily value of protein in each bottle is the first of Its kind in the world of protein & 15g of whey protein has the highest leucine content of any known protein, essential for muscle protein synthesis and one of the products that help Ketogenic dieters maintain their diet