Optimum Nutrition Serious Mass Chocolate Peanut Butter 6lb (2.72kg)

Optimum Nutrition Serious Mass Chocolate Peanut Butter 6lb (2.72kg) is a premium calorie-dense mass gainer built for athletes seeking serious size and strength. Each serving provides over 1250 calories with 50 grams of protein from high-quality whey and casein, along with more than 250 grams of carbohydrates for sustained energy and muscle recovery. It includes added creatine, glutamine, and 25 essential vitamins and minerals, making it a complete nutritional solution for those struggling to hit daily intake requirements. The chocolate peanut butter flavor offers a rich, indulgent taste, turning every shake into a satisfying treat. Serious Mass supports fast recovery, promotes glycogen replenishment, and provides the fuel necessary for extreme training sessions. Whether used post-workout or between meals, it helps hard gainers maintain a steady calorie surplus for optimal growth. This product is trusted worldwide for its effectiveness, making it a go-to choice for athletes pushing past performance plateaus.