Free Shipping on Orders Over $50.00! For a limited time, get free standard shipping on all orders over $50.00

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

This product can only be shipped within the U.S. and U.S. Territories.