Optimum Nutrition Serious Mass Vanilla 12lb (5.6kg)

Optimum Nutrition Serious Mass is a high-calorie weight gainer designed to help support muscle growth and recovery for those with high energy needs. Each serving delivers a powerful blend of protein, complex carbohydrates, vitamins, and minerals to fuel intense workouts and promote lean mass gains. With a delicious vanilla flavour and easy mixability, Serious Mass provides a convenient way to meet daily calorie and nutrient requirements for muscle building and overall fitness.