Optimum Nutrition
Optimum Nutrition
Optimum Nutrition Serious Mass Weight Gainer, Chocolate Peanut Butter, 6 lb
$28.99List price $34.9917% off
Typical sale price. List price (MSRP) $34.99. Prices are for reference and vary by retailer.
- 1,250 calories per serving
- 50g protein
- Creatine and glutamine added
Overview
ON Serious Mass, the best-selling weight gainer for hard gainers. US shoppers bought the Optimum Nutrition Serious Mass Weight Gainer widely between 2015 and 2025, and it remains a well-reviewed choice in mass gainers. This listing is for the 6 lb version. 1,250 calories per serving. 50g protein.
Features
- 1,250 calories per serving
- 50g protein
- Creatine and glutamine added
Specifications
| Brand | Optimum Nutrition |
|---|---|
| Model / item number | ONSM-CPB-6LB |
| Category | Mass Gainers |
| Most popular | 2015–2025 (USA & Europe) |
| Country of origin | USA |
| Warranty | 1 Year Limited Warranty |
| List price (MSRP) | $34.99 |
How it compares
| Product | Brand | List price | Popular |
|---|---|---|---|
| Optimum Nutrition Serious Mass Weight Gainer, Chocolate Peanut Butter, 6 lb | Optimum Nutrition | $34.99 | 2015–2025 |
| MuscleTech Mass-Tech Extreme 2000, Triple Chocolate Brownie, 6 lb | MuscleTech | $49.99 | 2015–2025 |
| Dymatize Super Mass Gainer, Rich Chocolate, 6 lb | Dymatize | $44.99 | 2015–2025 |
| Naked Nutrition Naked Mass Weight Gainer, Unflavored, 8 lb | Naked Nutrition | $99.99 | 2015–2025 |