GNC Total Lean™ Lean Shake™ 25 offers a well-balanced blend of high quality protein, fiber, vitamins, minerals, and fat. This great tasting combination makes a healthy addition to you dietary regimen. With 25 grams of high quality protein per serving, Lean Shake™ 25 can be an effective way to increase your feeling of fullness and satiety. Dietary protein can also help support lean body mass. Each serving of GNC Total Lean™ Lean Shake™ 25 also includes 8 grams of fiber including oat beta-glucan. Oat beta-glucan is a naturally –occurring, powerful, low-glycemic soluble fiber found in oat bran that helps support normal, healthy blood glucose levels. Both protein and fiber are effective at inducing a greater feeling of satiety compared to high-glycemic foods and can make you feel fuller for a longer period of time, so you eat less and wait longer between meals.