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Optimum Nutrition Serious Mass is the ULTIMATE in weight gain formulas. Optimum Nutrition Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted. Each delicious chocolate flavoured shake delivers 1,250 calories - with no added sugar and has less than 5g of fat per serving. This includes 250g of carbohydrates, and 50g of blended protein to support muscle growth.
*This product is imported from the USA
A Brief History
Optimum Nutrition, Inc. (ON) is part of Glanbia, a leading international cheese and nutritional ingredients group. ON owns and operates two premium sports nutrition brands, Optimum Nutrition and American Body Building (A.B.B.). Together, these brands provide active adults around the world with a comprehensive line of powdered, bar, tablet, capsule and ready to drink products. In addition to making Gold Standard 100% Whey, the worlds' best-selling whey protein, ON created the slowly digesting protein category with Gold Standard 100% Casein. ON has been committed to providing dedicated athletes and aspiring gym-goers with high quality gold standard sports nutrition for 30 years now.