Optimum Nutrition Serious Mass is a high-calorie weight gainer protein powder designed to help you maximize your daily caloric intake. Each 2-scoop serving provides over 1,200 calories, 50 grams of blended protein, and 250 grams of carbohydrates. It also includes over 20 vitamins and minerals, including Vitamin C and Zinc for immune support. This product is ideal for post-workout recovery, as part of a complete meal, or as a daily snack to add calories, carbs, and protein to your diet. The Chocolate Peanut Butter flavor offers a delicious taste, and the powder can be blended with fruits, nuts, and other calorie-dense foods to boost your weight gain potential.