Since different proteins have distinct amino acid profiles and utilization rates, Optimum Nutrition Pro Complex Augmented Protein System (APS) combines 8 sources to create a superior protein blend, designed to enhance your muscle-building potential. Uniting Whey Protein Isolates, Egg Albumen, and Hydrolyzed Proteins, and key Free Form Amino Acids, Optimum nutrition has created a protein with varied digestion rates and an amino acid profile that is off the charts. Each serving of Optimum Nutrition Pro Complex Augmented Protein System is packed with 60 grams of the highest quality proteins commercially available. Simply put, it is formulated to take you to the next level.