Optimum Nutrition Serious Mass is a high-calorie weight gainer protein powder designed to help you gain weight and muscle mass. Each serving provides a substantial amount of protein, carbohydrates, vitamins, and minerals, including Vitamin C and Zinc for immune support. This mass gainer is formulated with creatine to enhance strength and improve workout performance. It’s ideal for athletes and individuals looking to increase their caloric intake in a convenient and delicious way.
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