🚀 Bulk up smarter, not harder with Serious Mass!
Optimum Nutrition Serious Mass is a high-calorie weight gainer powder delivering 1,250 calories, 50 grams of blended protein, and over 250 grams of carbs per serving. Enhanced with 25 essential vitamins and minerals plus creatine and glutamine, it supports muscle growth, recovery, and immune health—perfect for serious athletes and busy professionals aiming to build mass efficiently.
Allergen Information | Eggs, Milk, Soy, Wheat |
Weight | 12 Pounds |
Units | 5440 Grams |
Use By Recommendation | Between Meals, After Weight Training & Before Bed |
Serving Recommendation | One Scoop |
Brand | Optimum Nutrition (ON) |
Format | Powder |
Age Range Description | Adult |
Country of origin | USA |
Serving Size | 2 scoops, 2 scoops |
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