Optimum Nutrition Serious Mass Weight Gain Powder – High Calorie Mass Gainer for Size Goals

Optimum Nutrition Serious Mass is a well-known weight gain powder made for people who want to increase body weight, size, and muscle mass. It combines high calories, protein, carbohydrates, vitamins, and minerals to help support calorie surplus goals. Official product listings note around 1200+ calories and 50g protein per full serving, depending on serving size.

Key Benefits

• High calorie formula for weight gain goals
• 50g protein per full serving
• Carbohydrates to support calorie intake
• Added vitamins and minerals
• Useful for hard gainers / fast metabolism users
• Trusted global supplement brand

How to Use

Mix as directed with water or milk. Many users start with half serving first because full servings can be heavy and filling.

Best For

• Skinny users trying to gain weight
• Bulking phase nutrition
• People with low appetite
• Gym users needing extra calories
• Hard gainers

Important Note

Community discussions are mixed: some users report strong weight gain results with consistency, while others mention bloating or prefer homemade calorie shakes. Start gradually and monitor digestion.

Final Verdict

If you struggle to eat enough calories daily, Optimum Nutrition Serious Mass can be a practical shortcut for weight gain and bulking. Best results come with training, consistent calorie surplus, and proper meals.