Optimum Nutrition Serious Mass combines high quality carbohydrates and proteins and comes fortified with essential minerals and nutrients to support better growth and development. ON Serious Mass is a trustworthy weight gainer that has won many loyal fans simply because it is effective as well as efficient. For those who have a poor appetite, hectic routines and over-active metabolism, ON Serious Mass offers a simple way to gain massive weight. Each serving offers 1250 calories - with 50 grams protein and 250 grams of carbohydrates. For those who cannot seem to gain muscle mass, it is best to trust a proven formula that guarantees muscle gains.
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Item Weight: 5.44 Kg
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Item model number: ONSERIOUSMASS12STRAW
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ASIN: B00CX96668
