







💥 Serious Mass, Serious Gains — Don’t Just Train, Transform!
Optimum Nutrition Serious Mass is a high-calorie mass gainer protein powder designed for athletes and fitness enthusiasts aiming to bulk up efficiently. Each serving delivers 1250 calories, 50g of protein, 3g creatine monohydrate, and 25 essential vitamins and minerals, all with less than 5g fat and no added sugar. Available in six delicious flavors, it supports muscle growth, recovery, and performance with a clean, nutrient-rich formula.


| Weight | 5.44 kg |
| Units | 5450.0 gram |
| Storage Instructions | Store in a cool and dry place |
| Manufacturer contact | 4 Waterside, Dublin 24, Ireland |
| Brand | Optimum Nutrition |
| Format | Powder |
| Age Range Description | Adult |
| Country of origin | United Kingdom |
| Serving Size | 100 g, 334 g |
| Energy (kcal) | 379.77 kcal |
| Fat | 1.4 g |
| of which: | - |
| - Saturates | 0.5 g |
| Carbohydrate | 77 g |
| of which: | - |
| - Sugars | 7.8 g |
| Protein | 15 g |
| Salt | 0.48 g |
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