Optimum Nutrition

Serious Mass // Mass Gainer

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Optimum Nutrition Serious Mass is the ultimate weight gain protein formula that supplies hard gainers and ectomorphs, with the calories needed to pack on pounds of quality muscle and develop a strong, solid and muscular physique. 

Optimum Nutrition Serious Mass Protein features:

  • High-Calorie Formula Supports Muscle Building and Weight Gain Goals
  • 1,250 Calories per Serving to Help Boost Calorie Intake
  • 50 Grams of Protein per Serving to Help Build and Maintain Muscle
  • 252-254 Grams of Carbohydrates per Serving to Help Fuel Workouts
  • 3 Grams of Creatine Monohydrate per Serving
  • 25 Vitamins & Essential Minerals

As it is difficult to consume enough calories through regular eating and food, Serious Mass brings quality calories in the form of a tasty shake which can be used in between meals and immediately after your workout. Serious Mass is consumed to help support a calorie surplus for weight gain and muscle building. The added 1g of Creatine Monohydrate has been shown to support muscle strength, power and size when combined with high intensity activities. 

Directions for Use:

Mix 2 scoops of the powder into 24 fluid ounces of cold water or milk using an electric blender. This allows to you add in fruits, peanut butter and other calorie-contributing foods. TIP: New users should start with a 1-scoop half serving. Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet.