by Optimum Nutrition
Optimum Nutrition Serious Mass is a powerful mass gainer formulated for those who struggle to consume enough calories to support muscle growth. With over 1,250 calories per serving when mixed with water, it provides a convenient and effective way to significantly increase your daily caloric intake. Each serving delivers 50 grams of high-quality protein alongside a substantial carbohydrate blend to
| Retailer | Size | Price (CAD) | Availability |
|---|---|---|---|
| Bulldog Nutrition | 6lbs | $69.97 | Out of stock |
| Supplements Canada | 12LB | $104.99 | In stock |
| Supplement Source | 12lbs | $104.99 | In stock |
Prices last synced on 2026-10-30. Confirm at the retailer before buying.