OPTIMUM NUTRITION(ON) MASS HIGH PROTEIN WEIGHT GAINER FORMULA

Optimum Nutrition Serious Mass – Serious Size. Serious Gains.

Struggling to gain size? Serious Mass by Optimum Nutrition is the ultimate mass gainer formula, packed with high-quality calories, protein, and essential nutrients to help you build size, strength, and stamina. Designed for hard gainers and serious athletes, it fuels intense training and supports rapid muscle growth.

• 1,250 calories per serving (with water)
• 50g high-quality protein + 252g carbs
• Added creatine, glutamine & 25+ essential vitamins & minerals
• Supports weight gain, muscle recovery & strength building

If you're ready to bulk up and transform your physique, Serious Mass is your go-to for next-level growth.