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🚀 Elevate your mass game—because serious gains wait for no one!
Optimum Nutrition Serious Mass is a high-calorie weight gainer protein powder delivering over 1250 calories, 50g protein, and 3g creatine per serving. Designed for athletes and fitness enthusiasts, it supports muscle growth, recovery, and performance with a clean formula featuring 25 essential vitamins and minerals, low fat, and no added sugar. Available in six flavors, it’s the ultimate convenient solution for those committed to serious mass and muscle gains.














| ASIN | B0015R36XU |
| ASIN | B0015R36XU |
| Age Range Description | Adult |
| Allergen Information | Contains: Milk may contain |
| Benefits | Weight Gain |
| Best Sellers Rank | 557 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 23 in Whey Nutrition Protein |
| Brand Name | Optimum Nutrition |
| Country Of Origin | United Kingdom |
| Country of origin | United Kingdom |
| Customer Reviews | 4.4 4.4 out of 5 stars (5,839) |
| Customer reviews | 4.4 4.4 out of 5 stars (5,839) |
| Diet Type | Vegetarian |
| Flavour | Strawberry |
| Global Trade Identification Number | 00748927023015 |
| Guaranteed software updates until | unknown |
| Is discontinued by manufacturer | No |
| Item Dimensions | 20.3 x 20.3 x 25.7 centimetres |
| Item Weight | 2.73 Kilograms |
| Item model number | 1031919 |
| Manufacturer | OPTIG |
| Manufacturer | OPTIG |
| Manufacturer Contact Information | 4 Waterside, Dublin 24, Ireland |
| Manufacturer Part Number | 1031919 |
| Material Type Free | Sugar Free |
| Model Name | Optimum Nutrition Serious |
| Model Number | 1031919 |
| Net Content Volume | 11.91 Litres |
| Number of Items | 1 |
| Package Type Name | Tub |
| Product Dimensions | 20.32 x 20.32 x 25.7 cm; 2.73 kg |
| Protein | 15 g |
| Recommended Uses For Product | Post-Workout, Pre-Workout |
| Total Servings Per Container | 8 |
| UPC | 748927023015 |
| Unit Count | 2730.0 gram |
| Vitamins And Minerals | 0.6 g |
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