SERIOUSMASS MANUFACTURED IN THE USA

Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C, Zinc and Vitamin D for Immune Support.

SERIOUS MASS is the ultimate muscle building and weight gain formula.

Serious Mass Gainer Powder makes the ideal post-workout shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gains goals. Per 2-scoops, you are getting:

1,200+ Calories.

50 Grams of Protein per Serving to Help Build and Maintain Muscle.

250+ Grams of Carbohydrates per Serving to Help Fuel Workouts.

3 Grams of Creatine Monohydrate per Serving.

25 Vitamins & Essential Minerals.