While many other whey protein powders out there have an excess of fillers, fats, and carbohydrates, the WHEY HD? protein formula is made of quality ingredients and no unnecessary fillers to help you build and maintain lean muscle. WHEY HD? protein powder also includes a unique enzyme formulation to support the digestion of whey protein, and delivers 5 grams of branched chain amino acids per serving to counter muscle protein breakdown. This allows each and every one of your workouts to be powerful and productive to the fullest extent.