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FREE UM Ascend Pre Workout with any UM 2kg WPI Bundle Purchase.

FREE UM Ascend Pre Workout with any UM 2kg WPI Bundle Purchase.


Optimum Nutrition Serious Mass

SKU 748927064162
Save 16% Save 16%
Original price $139.95
Original price $69.95 - Original price $139.95
Original price $139.95
Current price $116.95
$62.95 - $116.95
Current price $116.95
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Out of stock
Out of stock
Size: 12LB - 5.45KG
Optimum Nutrition Serious Mass: the ULTIMATE in weight gain formulas. Optimum Nutrition Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted. Super high in carbohydrates and Calories Optimum Nutrition Serious Mass is designed to help trainers with fast metabolisms obtain the calories they need to gain weight. 

  • 1,250 Calories per serve.
  • 50g of blended protein.
  • Over 250g of Carbohydrates per serve with no added sugar.
  • Enhanced with Creatine, Glutamine, Vitamins and essential minerals
How it helps
  • Serious mass provides a massive 1,250 calorie serve per 2-scoop serving, with a whopping 50 grams of protein to support muscle recovery.
  • Ideal post-workout supplement and between meals shake to maximise your results
  • Designed to support your weight gain and muscle mass goals.

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.

Nutritional information



Some powdered products, including (but not limited to) pre-workouts, fat burners and pump formulas are prone to clumping over a long period of time due to the nature of the ingredients. 

Although Supplements Central ensures all descriptive, nutritional and visual information is up to date, suppliers may change product formulations and ingredients without warning, and may not advise of us these changes.

Do not exceed recommended daily dosage. Do not consume products if seals are broken or damaged. 

Sports Supplements, vitamins and minerals should never replace a balanced and varied diet.

Warning & Safety Information

Always read the label. Follow directions of use. Please read the label to decide whether this product is right for you.

Always consult with a healthcare professional before taking sports, vitamins or mineral supplements, especially when pregnant or breastfeeding. If symptoms persist, please seek advice from your relevant health care professional.

Products should not be considered a sole source of nutrition and should be consumed in conjunction with a nutritious diet and appropriate training or exercise program.

Products containing caffeine are not recommended for children, pregnant or lactating women, or individuals sensitive to caffeine.

Keep all supplements and vitamins out of reach of children. Always follow the correct dose and storage instructions.