Optimum Nutrition (ON) Serious Mass Chocolate 6 lbs (2.72 kg) – High Calorie Weight Gainer for Muscle Building

Optimum Nutrition Serious Mass – Chocolate Flavor

Take your muscle-building journey to the next level with Optimum Nutrition Serious Mass Chocolate. This premium weight gainer is specially formulated for hard gainers, athletes, and fitness enthusiasts who need extra calories and protein to support healthy weight gain and muscle growth.

Each serving delivers a powerful combination of high-quality protein, complex carbohydrates, essential vitamins, and minerals to fuel your workouts, speed up recovery, and help you achieve your mass-gaining goals. The rich Chocolate Flavor offers a smooth and delicious taste that's perfect with water or milk.

Key Benefits

• 💪 Supports lean muscle growth and healthy weight gain
• 🔥 Up to 1,250 calories per serving*
• 🥛 50g protein per serving*
• ⚡ Over 250g carbohydrates for energy
• 🍫 Rich and creamy Chocolate Flavor
• 💥 Fortified with vitamins and minerals
• 🏋️ Perfect for bodybuilders, athletes, and hard gainers
• ✅ Easy to mix and great tasting

*Nutrition values may vary slightly by serving size and region.

How to Use

Mix 2 scoops with 700–1000 ml of cold water or milk. Consume after workouts or between meals to increase your daily calorie intake.