CytoGainer delivers large portions of protein and carbohydrates, without the fat and sugar. CytoGainer contains glutamine-rich partially pre-digested whey peptides for improved protein synthesis. Your bodys responses to these whey fractions, along with the branched-chain amino acids (BCAA’s) found in CytoGainer, are primarily responsible for muscle growth. With no added simple sugars, no fructose, and no sucrose, CytoGainers highly complex maltodextrins are specifically designed to give you a rapid infusion of nutrients to help kick start the critical recovery process. CytoGainer will help replenish muscle and liver glycogen after muscle-thrashing workouts so you can pack on lean mass. » Read more: CytoSport CytoGainer Lean Muscle Maximizer Protein Drink Mix