Optimum Nutrition Serious Mass Protein Powder 12lb

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  • nutrition facts

    Optimum Nutrition Serious Mass is considered the ultimate protein formula for individuals looking to gain weight. It specifically caters to hard gainers and ectomorphs, providing the necessary calories to pack on pounds of quality muscle and develop a strong, solid, and muscular physique. Each serving of this mass gainer delivers 1250 calories, along with a blend of 50 grams of high-quality protein and over 250 grams of carbohydrates. Additionally, the inclusion of Creatine Monohydrate and Glutamine in the formula makes it an excellent complement to intense strength training workouts. 


    Unlock Your Muscle-Building Potential with Optimum Nutrition Serious Mass:

    1. Provides a whopping 1,250 calories per serving: This high-calorie formula is perfect for individuals who struggle to consume enough calories through their regular diet. It helps to create a calorie surplus, which is necessary for gaining weight and building muscle mass.

    2. Contains 50 grams of blended protein per serving: The protein blend includes whey protein concentrate, calcium caseinate, egg albumin, and sweet dairy whey. This combination of fast- and slow-digesting proteins helps to promote muscle protein synthesis and prevent muscle breakdown.

    3. Includes 252-254 grams of carbohydrates (with no added sugar): The carbohydrates in Serious Mass come from maltodextrin, a complex carbohydrate that provides a sustained release of energy. This helps to fuel intense workouts and replenish glycogen stores, which are depleted during exercise.

    4. Contains 3 grams of creatine monohydrate: Creatine is a well-studied and effective supplement for improving strength and muscle mass. It helps to increase ATP production, which is the primary energy source for high-intensity activities.

    5. Includes 20 additional vitamins and minerals: Serious Mass provides a comprehensive blend of vitamins and minerals, including vitamin C, vitamin D, and zinc. These nutrients support immune function and overall health and wellbeing.

    6. Offers an ideal formula to support weight gains: Serious Mass is designed to provide a convenient and cost-effective way to increase calorie and nutrient intake for athletes, bodybuilders, and individuals looking to gain weight. It is a nutrient-dense formula that helps to support weight gains in a healthy and sustainable way.

    7. Can be enjoyed post-workout or between meals: Serious Mass can be consumed post-workout to support recovery or between meals to provide a convenient way to increase calorie and nutrient intake throughout the day. It is a versatile supplement that can be tailored to fit your specific needs and goals.



    Mix 2 scoops of Serious Mass with 710ml of water or milk. Shake well and consume between meals or post-workout.



    Each serving of Serious Mass is 334g. It is recommended to consume 1-2 servings per day to support weight gain and muscle growth.



    Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavors, Vitamin and Mineral Blend, Lecithin, Medium Chain Triglycerides.


    Allergen Info:

    Contains milk, egg, soy, and wheat (glutamine peptides).



    Store in a cool, dry place. Once opened, reseal the container tightly and store in a cool, dry place.



    1. Who should use Optimum Nutrition Serious Mass Weight Gainer?
      Serious Mass is ideal for individuals who struggle to consume enough calories and nutrients through their regular diet to support weight gain and muscle building. It is particularly beneficial for athletes, bodybuilders, and fitness enthusiasts who require high levels of energy and nutrients to support their performance and recovery.

    2. How does Optimum Nutrition Serious Mass Weight Gainer work?
      Serious Mass works by providing a high-calorie, high-protein, and high-carbohydrate formula that helps to support a calorie surplus and promote weight gain and muscle building. It also contains additional vitamins and minerals to support overall health and wellbeing.

    3. How should I take Optimum Nutrition Serious Mass Weight Gainer?
      The recommended dosage of Serious Mass is two heaping scoops (334 grams) mixed with water or milk. It can be taken between meals, post-workout, or before bed to support muscle recovery and growth. 

    4. How long does it take to see results from Optimum Nutrition Serious Mass Weight Gainer?
      Results will vary depending on individual factors such as diet, exercise, and genetics. However, with consistent use of Serious Mass along with a balanced diet and regular exercise, users can expect to see noticeable improvements in weight gain, muscle mass, and overall body composition within a few weeks.
    • Nutrition Information
    • The Nutritional Information stated above should be used as a guide only. Actual values may change from time to time if the manufacturers update their formulation. Values will also vary depending on flavours and sizes.

      Please click here to contact us if you have any questions regarding this product's ingredients.

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