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Optimum Nutrition Serious Mass 5.45


The ULTIMATE weight gain formula.
Add serious mass with 1,250 quality calories per shake.
Support muscle growth with 50 g of proteins and 250 g of carbs per serving.
Enjoy between meals, post-workout &/or before bed.

Optimum Nutrition’s Serious Mass is the ULTIMATE weight gain formula. If you find it difficult to gain weight, Serious Mass will help you develop the physique you’ve always wanted!

Each delicious shake delivers an incredible 1,250 calories, but no added sugar. This includes 50 g of blended protein to support muscle growth and 250 g of carbohydrates. Supports growth of lean muscle mass.

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Serious Gains, Serious Taste, Serious Mass™

Size is an advantage in many sports, but some athletes have a hard time gaining weight. You can only eat so much food. Serious Mass™ is the ultimate in weight gain formulas, with 1250 calories per serving and 50 grams of protein to support muscle growth and repair. This instantized powder makes the ideal post work-out and between meals shake for sizing up your goals. Serious Mass™ provides you with the tools you need to pack on the pounds and when coupled with serious weight room effort – develop your physique to the fullest.

  • 1250 Calories
  • 50 g of Whey Protein
  • 25 Vitamins and Minerals
  • Creatine and Glutamine
  • Ideal formula to support weight gains
  • Enjoy post work-out and between meals
  • Available in a range of sizes and great tasting flavours

Mix 2 heaped scoops with 710 ml of water.

Ready to mix powder with protein, carbohydrates, vitamins and minerals, with sweetener


Free Optimum Nutriton Shaker!

Additional information

Weight 2.27 kg



Banana, Chocolate, Chocolate Peanut Butter, Vanilla, Strawberry, Cookies & Cream


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