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🚀 Bulk up smarter, not harder with Serious Mass!
Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering 1,260 calories, 50g of blended protein, and over 250g of carbs per serving. Enhanced with creatine, glutamine, and 25 vitamins and minerals, it’s designed to maximize muscle growth and recovery for adults committed to serious weight gain and fitness goals.














| ASIN | B000GIPJ02 |
| ASIN | B000GIPJ02 |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #1,755 in Health & Household ( See Top 100 in Health & Household ) #2 in Sports Nutrition Weight Gainers #306 in Sales & Deals |
| Brand Name | Optimum Nutrition |
| Customer Reviews | 4.5 4.5 out of 5 stars (20,097) |
| Date First Available | May 27, 2004 |
| Department | GNC|ALL|ALL|NUTRITIONAL SUPPLEMENTS |
| Diet Type | Vegetarian |
| Flavor | Vanilla |
| Item Dimensions | 15.35 x 11.42 x 5.51 inches |
| Item Highlight | Weight Gainer Protein Powder, Mass Gainer with Whey Protein, Creatine, Glutamine, BCAAs, Vitamins & Minerals, Easy Mixing |
| Item Weight | 12 pounds |
| Item model number | 1031920 |
| Manufacturer | Glanbia Performance Nutrition |
| Manufacturer | Glanbia Performance Nutrition |
| Manufacturer Part Number | 1031920 |
| Material Type Free | Caffeine Free |
| Model Name | Optimum Nutrition Serious Mass Weight Gainer Protein Powder Vitamin C Zinc and Vitamin D for Immune Support |
| Model Number | 1031920 |
| Net Content Volume | 13.88 liters |
| Number of Items | 1 |
| Package Type Name | Canister |
| Product Benefits | Muscle Growth, Weight Gain |
| Product Dimensions | 15.35 x 11.42 x 5.51 inches; 12 pounds |
| Protein | 50 g |
| Protein Source | Casein, Egg, Whey |
| Recommended Uses For Product | Post-Workout |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 16 |
| UPC | 748927023824 |
| Unit Count | 192 Ounce |
| Vitamins And Minerals | 0.9, 3.0, 30.0, 5.0, 700.0 milligrams |
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