
Optimum Nutrition Serious Mass 6LB is a high-calorie, protein-rich mass gainer designed to help you pack on muscle and size fast.
100% original, sealed, and available in Pakistan with fast delivery.
Optimum Nutrition Serious Mass 6LB – Premium Mass Gainer
Serious Mass by ON is one of the world’s most popular mass gainers, trusted by bodybuilders, athletes, and gym enthusiasts. With 1,250 calories per serving, it provides the fuel your body needs to build muscle and gain weight efficiently.
Each serving includes:
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50g protein
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254g carbohydrates
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25 vitamins & minerals
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Creatine monohydrate & glutamine
Perfect for anyone struggling to gain weight or needing extra calories for intense training.
💪 Why Choose ON Serious Mass?
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✔️ High-calorie mass gainer
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✔️ 50g protein per serving for muscle building
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✔️ Rich in carbs, vitamins, & minerals
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✔️ Includes creatine & glutamine for recovery
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✔️ Delicious flavors – easy to mix
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✔️ 100% authentic, imported stock in Pakistan
📈 Who Should Take Serious Mass?
Ideal for:
🏋️♂️ Hard gainers struggling to pack on weight
💪 Bodybuilders in bulking phase
🔥 Athletes needing high-calorie support
🏃♂️ People with fast metabolism wanting size
🧪 Nutritional Highlights (Per 2 Scoop Serving)
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1,250 Calories
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50g Protein
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254g Carbs
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4g Fat
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25 Vitamins & Minerals
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2g Creatine Monohydrate
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Lactose friendly
💰 Price in Pakistan: Rs. 28,500
We guarantee 100% original Optimum Nutrition Serious Mass with fast shipping and safe packaging.
🌍 Why Buy From Us?
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100% authentic, imported supplements
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Sealed & fresh batch
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Nationwide delivery in Pakistan
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Trusted seller with verified customers
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Secure checkout
🥤 How to Use
Mix 2 scoops with 600 ml milk or water.
Use post-workout or as a meal replacement for maximum calorie intake.
1. Internal Link
2. Comparison Blog Link
“ON Serious Mass vs Rule 1 Mass vs MuscleTech Mass Gainer – Which Is Best?”
3. Educational Article Link
“How to Gain Weight Fast with Mass Gainers in Pakistan”






