Optimum Nutrition Serious Mass – Chocolate Peanut Butter – 5.44 kg (12 lbs)

Optimum Nutrition Serious Mass – Chocolate Peanut Butter – 5.44 kg (12 lbs) is a trusted mass gainer built for individuals who struggle to gain weight and muscle. Each serving is packed with high-quality protein, complex carbs, vitamins, and minerals, delivering a calorie-rich formula that fuels growth. With its indulgent chocolate peanut butter flavor, it provides a delicious way to boost daily intake without feeling heavy. The protein blend supports lean muscle development, while the carbohydrate matrix ensures glycogen replenishment for sustained energy. Enriched with essential vitamins and minerals, it helps maintain balance while promoting recovery and overall health. Its massive 12 lbs size ensures long-term supply for consistent use, making it a reliable option for athletes and hard gainers. Designed for post-workout recovery or meal replacement, this mass gainer delivers results by providing the calorie surplus necessary for building serious size and strength.