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Optimum Nutrition Serious Mass Weight Gainer Protein Powder is a high-calorie mass gainer delivering 50g protein and about 1200 calories per serving to support size and strength gains. 16 servings per pack · Available in chocolate.
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The brand behind this product — their story and what they stand for.
Optimum Nutrition is one of the world's most trusted sports nutrition brands, best known for its Gold Standard whey line sold worldwide.
Understand which fitness goals this product is best suited for.
Muscle Gain
Supports muscle growth and recovery when combined with resistance training and a protein-rich diet.
A quick look at pricing, tier, and how it stacks up against the category average.
Step-by-step usage instructions so you get the most out of every serving.
Mix 1–2 scoops with 300–400ml of milk for a calorie-dense shake.
Consume between meals or post-workout to hit your caloric surplus.
Start with 1 scoop to assess tolerance before moving to the full serving.
Track your total daily calories. A mass gainer works best when it fills a genuine calorie gap — not as a meal replacement.
Common questions about this product — answered clearly and honestly.
Yes, this product is vegetarian-friendly. It does not contain any non-vegetarian ingredients.
As of our last check, this product does not have publicly listed third-party lab testing. Look for brands that offer Trustified, NABL, or Labdoor certifications for verified purity.
Each serving provides 50g of protein. This is a solid amount that supports muscle protein synthesis effectively.
This product is available in Chocolate. Flavour preferences are personal — chocolate and unflavoured tend to be the most versatile options.
The total pack weight is 5.44kg. With 16 servings, this should last approximately 16 days if you take 1 serving daily.
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