Optimum Nutrition - Serious Mass casein Helps increase metabolism

Helps increase metabolism

Suitable before training

and mood without jitters or crash

commonly included in sports nutrition and training routines to support energy

HASTA-approved for quality and safety assurance

Optimum Nutrition - Serious Mass casein Helps increase metabolismOptimum 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