Genuine Muscle Milk Light. Nutritional Shake. Contains No Milk. Naturally and Artificially Flavored. 30 g Protein. Lactose Free. No Sugar. Gluten Free. Each Container Provides an Excellent Source of 20 Vitamins and Minerals. Muscle Milk Light provides nutrients found in natural milk that are important from building muscles and bones. Muscle Milk Light contains 38% fewer calories than Genuine Muscle Milk (200 calories vs. 320 calories per 17 fl. oz.).