🚀 Bulk Up Boldly with Serious Mass!
Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering over 1,200 calories, 50g of blended protein, and 250g+ carbohydrates per 2-scoop serving. Enhanced with 20+ vitamins and minerals including immune-supporting Vitamin C and Zinc, it’s designed for serious muscle growth and recovery. Versatile enough to customize with your favorite calorie-dense add-ins, it’s the ultimate shake for professionals committed to maximizing their mass gains.
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