Optimum Nutrition - Serious Mass casein 100% naturally sweetened and flavoured

100% naturally sweetened and flavoured

Do not exceed 1 double serve per day

HASTA-approved for quality and safety assurance

Helps increase metabolism

Produced via fermentation from Non-GMO corn for a clean

Optimum Nutrition - Serious Mass casein 100% naturally sweetened and flavouredOptimum Nutrition Serious Mass is a high calorie weight gainer delivering 1,250 calories, 40g of protein, 250g of carbohydrates, Creatine, Glutamine, and 25 vitamins and minerals per serve, available in 6lb and 12lb sizes across Banana, Chocolate, Strawberry, and Vanilla. 1,250 calories per serve 40g protein per serve 250g carbohydrates per serve Creatine, Glutamine, and Glutamine Peptides included 25 vitamins and minerals per serve Available in 6lb