Extreme Mass Gainer Body Builder, Vanilla, 5 LBBody Builder Extreme Mass Gainer, Vanilla, 5 LB, is a highquality supplement designed to support muscle mass increase and weight gain for trainers. It provides concentrated whey protein, rich in calories, protein, carbohydrates, and amino acids, essential for muscle growth and recovery. The product uses CFM technology, a pure filtration process that maintains protein quality and efficiency. The mass gainer includes three essential amino acids: