ON Serious Mass 12lb Flavor:Chocolate Key Ingredients: Potassium citrate

Key Ingredients: Potassium citrate

Increase Muscle Mass

Source of essential amino acids for the maintenance of good health

grains and seeds

and healthier-looking skin

ON Serious Mass 12lb Flavor:Chocolate Key Ingredients: Potassium citrateOPTIMUM NUTRITION Serious Mass powder supports muscle building, weight gain, and helps fuel workouts with up to 1260 calories, 50g of protein, up to 253g of carbohydrates, and 5g of creatine monohydrate in every serving all in a convenient shake for easy consumption. Serious Mass is our highest calorie weight gain formula created specifically to provide maximum macros for athletes with extraordinary muscle and performance goals. Along with carbs for