MET-Rx Size UpMETAMYOSYN® Muscle Mass Formula Specially designed for hard gainers who want to gain weight and pack-on quality mass. MET-Rx® Xtreme Size Up features FOUR Hardcore Optimizer Blends to help you keep growing when other weight gainers quit. METAMYOSYN® Muscle Mass Optimizer Blend Complex Carb Optimizer Blend Lean Lipid Optimizer Blend MultiVitamin Optimizer Blend • Each serving contains 59g protein, 64-67g High-Quality Complex Carbs, 3g Creatine, 3g Glutamine and 600 calories • No Fructose or Aspartame • Mixes quickly and goes down easy 6lbs. |