Transform your muscle-building journey with Optimum Nutrition Serious Mass, the ultimate high-calorie weight gainer designed for athletes who demand extraordinary results. This powerhouse formula delivers an incredible 1,260 calories per serving, making it the perfect solution for hardgainers and those with intense training regimens who struggle to consume enough calories through food alone.

Every shake packs a massive 50 grams of premium protein to fuel muscle growth and recovery, complemented by up to 253 grams of carbohydrates that provide the energy your body needs to power through demanding workouts and support the muscle-building process. The rich chocolate flavor makes each serving a delicious experience rather than a nutritional chore.

What sets Serious Mass apart is its comprehensive formula that goes beyond basic calories and protein. Each serving includes 5 grams of creatine monohydrate, one of the most researched and effective supplements for strength and performance enhancement. This means you're getting your mass gainer and creatine supplementation in one convenient shake, simplifying your nutrition routine while maximizing results.

How to Use: Mix 2 heaping scoops with 24 fluid ounces of cold water, milk, or your favorite beverage. For optimal results, consume between meals, post-workout, or before bed to maximize daily caloric intake. Adjust serving size based on your individual goals and caloric requirements.

Optimum Nutrition has been the gold standard in sports nutrition for decades, trusted by professional athletes and fitness enthusiasts worldwide. Serious Mass continues this legacy with a formula specifically engineered for those who are serious about gaining size, strength, and muscle mass.