Optimum Nutrition Serious Mass in Chocolate flavor is a high-calorie mass gainer designed for individuals looking to build muscle mass. Each serving delivers 1,250 calories and 50g of protein to support muscle growth.

Key Benefits:

1,250 calories and 50g of protein per serving for mass gain.
Enriched with vitamins and minerals for complete nutrition.
Ideal for athletes looking to bulk up.
Suggested Use: Mix 2 scoops with water or milk post-workout or between meals to increase caloric intake and support muscle growth