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Optimum SERIOUS MASS, 12lb - 35 Shakers to Choose
Optimum SERIOUS MASS, 12lb - 35 Shakers to Choose


 
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Optimum Nutrition Serious Mass

The ULTIMATE in weight gain formulas



Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted.

BEYOND THE BASICS

Adding Calories Has Never Been This Easy or Tasted So Good
1,250 CALORIES
50 g of BLENDED PROTEIN
Over 250 g of Carbohydrates with NO ADDED SUGAR
Enhanced with Creatine, Glutamine, and Glutamine Peptides
25 Vitamins and Essential Minerals





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