by Optimum Nutrition
Optimum Nutrition Serious Mass, 12lbs High-calorie mass gainer for serious size and strength. 1,250+ Calories Per Serving: Designed to support rapid weight and muscle gain. 50g Protein Blend: Helps build and repair muscle tissue. 250g+ Carbohydrates: Fuels intense training and replenishes glycogen. Added Vitamins & Minerals: Supports overall performance and recovery. Easy Calorie Boost: Ideal
| Retailer | Size | Price (CAD) | Availability |
|---|---|---|---|
| Bulldog Nutrition | 6lbs | $66.97 | In stock |
| Supplements Canada | 12LB | $99.99 | In stock |
| Supplement Source | 12lbs | $109.99 | In stock |
Prices last synced on 2026-08-04. Confirm at the retailer before buying.