Optimum Nutrition (ON) Serious Mass: Protein Powder, 50 Grams of Protein, Vitamin C, Zinc And Vitamin D for Immune Support - Chocolate, 6 Lbs (2.72 kg)

<p>Fuel your muscle-building journey with Optimum Nutrition Serious Mass, the ultimate high-calorie weight gainer designed for athletes and fitness enthusiasts who struggle to pack on size. Each serving delivers a powerful blend of premium protein, complex carbohydrates, and essential nutrients to support your mass-gaining goals.</p> <p>This chocolate-flavored powerhouse combines quality whey protein with a calorie-dense formula that helps you meet your daily nutritional requirements, especially when whole food alone isn't enough. Whether you're a hardgainer looking to break through plateaus or an athlete in intense training, Serious Mass provides the nutritional foundation your body needs to grow.</p> <p>Transform your nutrition strategy and achieve the gains you've been working toward. Serious Mass isn't just a supplement, it's your partner in building the physique you deserve.</p>