









💥 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 increase muscle size and weight. Each serving delivers over 1,250 calories, 50 grams of protein, 250 grams of carbohydrates, and 3 grams of creatine monohydrate, along with 25 essential vitamins and minerals. Its instantized formula mixes easily and comes in six delicious flavors, making it the ultimate post-workout or between-meal shake for serious muscle growth and recovery.


| Allergen Information | Contains: Cereals containing Gluten, Egg may contain, Milk, Nut, Peanuts may contain, Soy |
| Weight | 5.82 kg |
| Units | 5450.0 Grams |
| Serving Recommendation | 334 Grams |
| 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 |
| Energy (kJ) | 1573.00 kJ |
| Energy (kcal) | 375.95 kcal |
| Fat | 1.8000 g |
| Carbohydrate | 75.0000 g |
| Protein | 15.0000 g |
| Salt | 0.5600 g |
Trustpilot
2 weeks ago
2 weeks ago