Prolab® Lean Mass Complex® is a convenient and delicious shake mix specifically designed for people who are working hard to create a leaner, healthier body. This unique product takes advantage of a well-balanced nutrition program that helps create and maintain positive changes in body composition and health. This program consists of 40% low-glycemic carbohydrates, 40% protein, and 20% healthy fats. Plus, it's a good source of fiber. This balanced nutrition is critical to Lean Mass Complex, which supplies the necessary amounts of protein, helps maintain lean muscle mass and provides complex carbohydrates to supply energy needed for a scheduled exercise program. To be used in conjunction with a healthy calorie reduction and exercise program.