Contains No Milk. Protein Nutrition Shake. Lactose Free. High Protein. 20g Protein. 170 Calories per container. Naturally and Artificially Flavored. Why do you workout? Is your season on the line? You have a big race coming up? You want to push your mind and body to test the outer limits of human determination? Or are you just trying to squeeze a little more cardio into your work week? It doesn't matter. We all need strength. And drinking Muscle Milk® after your workout helps build strength. . Muscle milk provides nutrients found in natural milk that are important for building muscles and bones.