💥 Bulk up smarter, not harder with Serious Mass!
Optimum Nutrition Serious Mass is a vegetarian-friendly, high-calorie weight gainer powder delivering over 1200 calories, 50g protein, 250g carbs, and 3g creatine per serving. Enhanced with 24 vitamins and minerals plus L-Glutamine, it supports muscle growth and recovery for those with fast metabolisms or high energy demands.
Additives | L-Glutamine |
Brand | Optimum Nutrition |
Format | Powder |
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