Now fitness-minded individuals can get exactly what they want in a ready-to-drink protein shake—high performance protein and more of it! MET-Rx RTD 51 is the powerhouse of protein shakes. Each nutritionally advanced, ready-to-drink protein shake is packed to the max with 51 grams of protein featuring Metamyosyn that helps support muscle. Get shakin' in your choice of delicious flavors.These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.