Optimum Nutrition Serious Mass Chocolate is the ultimate mass gainer for athletes looking to increase size and strength. With a massive 1,250 calories per serving and 50g of protein, it’s designed to fuel intense workouts and support muscle growth. The rich chocolate flavor makes it a delicious way to pack on calories and protein.

Key Benefits:

1,250 calories and 50g of protein per serving for rapid mass gain.
Enriched with vitamins, minerals, and glutamine for optimal recovery.
Ideal for athletes looking to increase muscle mass and strength.
Suggested Use: Mix 2 scoops with water or milk post-workout or between meals to boost calorie intake and promote muscle growth