ON Serious Mass, 12 lbs Chocolate


Optimum Nutrition Serious Mass 12 lb Chocolate helps to provide 1,263 calories in every serving, which is ultimate in a weight gain formula

ON Serious Mass comes with 50g of blended protein in every serving of 334g


Optimum Nutrition Serious Mass 12 lb Chocolate comes packed with the benefits of 25 essential vitamins and minerals for explosive muscle growth

ON (Optimum Nutrition) Serious Mass 12 lb Chocolate comes with more than 254 grams of carbohydrates without any added sugar content

ON Serious Mass 12 lb Chocolate is enhanced with creatine, L-Glutamine and Glutamic Acid

2 in stock


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. To instantly check the authenticity of your ON product, SMS us your 6 digit unique code (on the pack) at 57575 or visit our wesite

From the manufacturer

Additional information

Weight 5 kg


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