Drink the GNC TOTAL LEAN® LEAN SHAKE™ 25 as a meal replacement or snack solution for use alongside a healthy meal and exercise regimen to help reach weight loss and BMI goals. These shakes include protein and a variety of vitamins and minerals to support energy levels. Sufficient dietary protein may fuel muscles by supporting a positive nitrogen balance important for athletic performance goals. B vitamins play an essential role in fat and carbohydrate metabolism. These gluten-free drinks are available in five flavors, including vanilla bean, strawberries and cream and Swiss chocolate.