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ON Serious Mass Gainer




Elevate your fitness and muscle-building journey with Optimum Nutrition‘s Serious Mass Gainer, a high-calorie, high-quality supplement meticulously formulated to fuel your muscle growth, strength gains, and overall well-being.

Whether you’re a dedicated bodybuilder, an athlete striving for peak performance, or someone looking to gain healthy weight, Serious Mass Gainer is the powerhouse your body deserves.

Let’s delve into why it’s the ultimate choice for your muscle-building goals.

Key Benefits:

  1. Calorie-Packed Formula: Serious Mass Gainer is calorie-rich, making it an excellent choice for individuals seeking to increase their daily calorie intake for effective muscle growth and recovery.
  2. High-Quality Protein Blend: It features a blend of top-quality proteins, including whey protein concentrate and casein, ensuring a steady supply of amino acids for muscle repair and growth.
  3. Complex Carbohydrates: Packed with complex carbs, it provides sustained energy, fueling your workouts and aiding in muscle glycogen replenishment post-exercise.
  4. Lean Mass Focus: Serious Mass Gainer is designed to promote lean muscle gains while minimizing the risk of excessive body fat accumulation.
  5. Essential Nutrients: Fortified with essential vitamins and minerals, it supports overall health and vitality, ensuring you’re at your best.
  6. Effortless Mixing: The finely milled powder mixes smoothly with water, milk, or your preferred beverage, promising a lump-free, creamy shake every time.
  7. Delicious Flavors: Choose from a range of mouthwatering flavors, from classic Chocolate and Vanilla to more unique options, making your protein shake a delightful treat.
  8. Quality Assurance: Optimum Nutrition is a trusted brand known for its commitment to quality. Serious Mass Gainer undergoes rigorous testing to ensure purity, potency, and compliance with industry standards.

How to Use:

Mix one serving of Optimum Nutrition Serious Mass Gainer with water, milk, or your favorite beverage. Shake or blend until fully mixed. Consume one to two servings daily, adjusting based on your calorie and protein requirements.


Serious Mass Gainer contains a balanced blend of proteins, complex carbohydrates, essential vitamins, minerals, and natural and artificial flavors for a delicious taste.

Allergen Information:

Please check the label for specific allergen information, as this product may contain allergens like milk, egg, soy, and wheat.

Available Sizes:

Optimum Nutrition Serious Mass Gainer is available in various sizes, allowing you to choose the quantity that suits your goals.

Storage Instructions:

Keep the product in a cool, dry place, shielded from direct sunlight, and tightly seal the container after each use to maintain freshness.


If you have allergies, underlying health conditions, or are taking medications, consult with a healthcare professional before incorporating any new supplement into your diet.

Marketed By

Glanbia Performance Nutrition:
502 504 stat hub bldg no 2, Sahar road, Andheri East Mumbai 400059 India
indiacustomercare@glanbia.com, (11) 49594959



Manufactured By

1. Tirupati Wellness, SurajPur, Nahan Road, Paonta Sahib, Sirmaur HP – 173001

2. Optimum Nutrition, INC, US CUSTOMER SERVICE
3500 Lacey Road, Suite 1200
Downers Grove, IL 60515

GTIN – 748927068344, 748927967913, 748927065817, 748927065794, 748927061109, 748927062564, 748927062571, 748927028645, 748927059960, 748927056341, 748927059908, 748927060003, 748927060027, 748927065725, 748927059946, 748927060034, 748927059892, 748927059953, 748927059977, 748927059991, 748927060010, 748927056365, 748927065732, 748927028676, 748927026450, 748927056372, 748927056396, 748927056402 , 748927059961, 89080031139669, 748927056358, 748927056419, 748927059878, 748927059885, 748927059854, 748927059847, 748927059922, 748927060041, 748927056327, 748927056389, 748927056334, 748927059915, 748927059939, 748927059861


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ON Serious Mass Gainer
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