Support your muscle-building and weight gain goals with Optimum Nutrition Serious Mass™, a high-calorie mass gainer designed for athletes and hard gainers. This advanced formula delivers a powerful blend of protein, carbohydrates, vitamins, and minerals to help fuel recovery, support muscle growth, and increase daily calorie intake.
The rich chocolate flavor mixes smoothly into shakes, making it easy to add extra calories and nutrition to your routine. Ideal for post-workout recovery or between meals, Serious Mass™ helps provide the nutrients needed to support size, strength, and performance goals.
Perfect for individuals looking to build mass, improve recovery, and support intense training programs.
