The ultimate in weight gain formulas
Each great tasting chocolate flavour shake contains 1,250 calories per serving
Includes 25 vitamins and minerals, creatine, glutamine & MCT
Optimum Nutrition Serious Mass is the ultimate weight gain formula. Each delicious chocolate flavoured shake delivers 1,250 calories - with no added sugar and less than 5g of fat per serving. This includes 250g of carbohydrates, and 50g of blended protein to support muscle growth.
Standard delivery is £2.99 or FREE when you spend £25
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