Optimum Nutrition Serious Mass

Optimum Nutrition Serious Mass is the ultimate muscle building and weight gain formula. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this protein powder makes the ideal post-workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted.

• 1,250 Calories
• 50 Grams of Blended Protein
• Over 250 Grams of Carbohydrates with NO ADDED SUGAR
• Creatine, Glutamine and Glutamic Acid
• 25 Vitamins and Essential Minerals