About this item

• What is Serious Mass: Suitable for Vegetarians, Optimum Nutrition Serious Mass is a high calorie weight gainer which is also high in protein and when taken over time with regular resistance exercise and a balanced diet can help you gain mass and muscle.
• Who Needs Serious Mass: People with very active metabolism that struggle to gain weight; Athletes or anyone who has extremely high energy needs that can-not be met only with food.
• What's in Serious Mass: 1200+ Calories, 50 Grams of high quality Protein and over 250 Grams of Carbohydrates per Serving with 24 Vitamins & Minerals, Creatine & Glutamine.
• When to Consume: Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet.
• Purity - The neck of the tub is sealed with an induction vented liner inside the cap. The product has a plastic shrink wrap seal around the cap (outside) for protection.