PerfectAmino is pure essential amino acids in a form and ratio that is both 99% utilized by the body to build new protein and collagen, and completely absorbed into the bloodstream within an average of 23 minutes - by anyone, no matter the state of their digestive system.
Why do I emphasize 99%? Because no other protein is. And it's this 99% utilization which gives it less than 1 calorie for the protein equivalent of 30 grams of whey.