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Optimum Nutrition Serious Mass 5.45kg
For those who are truly committed to building size, the Optimum Nutrition Serious Mass 5.45kg tub is the long-term solution. The same legendary formula — 1,250 calories and 50g of blended protein per serving — but in a format that lasts, with 16 full servings from a single tub. Stock up, stay consistent, and let the results do the talking.
The tri-source protein blend of whey concentrate, caseinate, and egg albumen ensures both immediate and sustained amino acid delivery. Over 250g of carbohydrates with no added sugar provides the caloric surplus needed for serious mass, while creatine, glutamine, glutamine peptides, and 25 vitamins and minerals deliver comprehensive recovery and micronutrient support.
- 1,250 calories per serving — built for hard gainers
- 50g protein — whey concentrate, caseinate & egg albumen blend
- 250g+ carbohydrates | No added sugar
- Enhanced with creatine, glutamine & glutamine peptides
- 25 vitamins and essential minerals
- 5.45kg — 16 servings (334g per serving)
- Best consumed between meals, post-workout, or before bed
Recommended Use:
Add one serving to your preferred amount of water or milk and shake well. New users should start with half a serving to assess tolerance.
Allergens: Contains Milk, Egg, Soy, Wheat (Gluten). May contain nuts and peanuts.
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