Optimum Nutrition Serious Mass Chocolate – 6LB Mass Gainer
Serious Mass Weight Gainer – 1,250 Calories for Size & Strength
Serious Mass is designed for athletes and hard gainers looking to increase daily calorie intake and support muscle growth. Each serving provides 1,250 calories, 50g of protein, and 250g of carbohydrates to fuel intense training and support recovery.
High-Protein Muscle Support
A blend of whey protein concentrate, calcium caseinate, and egg albumin delivers quality protein to support muscle development and repair after demanding workouts.
Complete Training Nutrition
Enhanced with creatine, glutamine, glutamic acid, and 25+ essential vitamins and minerals to complement your training and daily nutrition.
Easy Calorie Boost
Ideal after workouts or between meals when you need convenient calories and protein. Mix with water or milk for a rich chocolate shake.
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Made with care and unconditionally loved by our customers, this signature bestseller exceeds all expectations.
Made with care and unconditionally loved by our customers, this signature bestseller exceeds all expectations.
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