Optimum Nutrition Serious MassAdult

Bulk up and achieve your weight goals with the Optimum Nutrition Serious Mass. Consisting of 1,250 calories and 50 grams of protein per 2-scoop serving, this weight-gain formula supports muscle recovery after your intense sets. Created to support your weight gain goals, the Optimum Nutrition Serious Mass is the ideal post-workout and between meals shake.

Optimum Nutrition Serious Mass features:

• 1,250 calories per serving boost calorie intake.
• 50 gm of protein per serving helps build and maintain muscles.
• 252-254 gm of carbohydrates per serving helps fuel workouts.
• No returns, all sales are final.