ON Serious Mass 12lb: 1200 Calories, 50g Protein

Unlock your muscle-building potential with ON Serious Mass by Optimum Nutrition. This powerful mass gainer serves up over 1,200 calories, 50g of blended protein, and 249g of carbohydrates per 2-scoop serving to help you maximize your gains.

• High-calorie formula to support muscle growth and recovery
• 50g of blended protein to build and repair muscle tissue
• 249g of carbohydrates to fuel intense workouts and aid in muscle recovery

With Serious Mass, you can expect to see significant improvements in your overall muscle mass and strength. The unique blend of protein and carbohydrates helps to promote muscle growth, while the high calorie count ensures you have the energy you need to power through even the toughest workouts.