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Optimum Nutrition

Optimum Nutrition Serious Mass

2 reviews


    Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized 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.

    • Adding Calories Has Never Been This Easy or Tasted So Good
    • 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
  • Optimum Nutrition Serious Mass Weight Gainer Nutrition Facts

Customer Reviews
5 Based on 2 Reviews
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Ben M.
Canada Canada
Best weight gainer

ON serious mass is the best weight gainer supplement I've used. I put on mass quick and had an increase in strength in the gym

Kenn C.
Canada Canada

delivery came on time and didn't wait for to long.