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Serious Mass
Serious Mass
Serious Mass
Serious Mass
Serious Mass
Serious Mass
Serious Mass
Optimum Nutrition (ON)

Serious Mass 16 SERVINGS


An ultimate weight gain formula, enhanced with 25 essential vitamins and minerals for explosive muscle growth.

Size :

Product Information

  • 50-Gram Protein
  • 1250 Calories
  • 250+ Grams Carbs With No Added Sugar
  • Loaded With Creatine Glutamine & Glutamic Acid
  • 25 Essential Vitamins & Minerals

Add two heaping scoops of Serious Mass to a blender filled with 24 oz (710 mL) of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients and blend for an additional 30-45 seconds.

Tips: Mixing two scoops of Serious Mass with 24 oz (710 mL) of nonfat or low-fat milk instead of water will give you a thicker, creamier, higher-calorie shake. New users may find it beneficial, to begin with, 1/2 of a serving daily for the first week and then gradually increase to 1 or more full servings several times a day.

Serious Mass is a substantial weight-gain supplement that can be used to feed serious calorie needs in a variety of different ways.

Between Meals: Drink 1/2-1 serving of Serious Mass between meals to maintain positive nitrogen balance and support a high-calorie diet.

Post-Workout: Begin drinking a 1/2-1 serving of Serious Mass 30-45 minutes following exercise to support maximum recovery.

Before Bed: Drink 1/2-1 serving of Serious Mass about 45-60 minutes before bed to provide nutrients to recovering muscle throughout the night.

Note: For best results use Serious Mass combined with intense weight training (3-5 times per week) and a sensible whole foods diet. Also, keep in mind that sufficient recovery between workouts impacts your ability to gain lean mass. Allowing at least 48 hours between workouts involving the same body parts is recommended.

Warnings: Keep out of reach of children. Do not take this product if you are pregnant or nursing a baby. Check with a qualified healthcare professional before using this product if you are under 18 years of age or if you have any known or suspected medical condition(s) including diabetes, hypoglycemia, and/or if you are taking any prescription or OTC medication(s).


Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post-workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted.

Why Serious Mass?

  • To Gain Weight: Serious mass supplies high amounts of proteins, carbs, and calories to increase your calorie intake and add pounds to your bodyweight.
  • To Build Muscle Mass: With 50 grams of muscle-building protein enhanced with creatine and other weight gaining formula helps you to add muscles and develop physique to fullest.

1 ) What are Mass gainers?

Mass gainers are the protein powders which are made of the blend of muscle-building protein and other essential vitamins, minerals, amino acids, and calories that offers a caloric surplus in your diet and helps to packs some pounds of real muscle mass.

2 ) Who need Mass gainers?

Mass gainers are designed for the one who is unable to meet their daily calorie needs with the balance of enough amount of macros and micronutrients required to gain and maintain the muscle mass.

3 ) Can I use it as a meal replacement?

No, Mass gainers can supplement your daily diet. But it can’t be used as meal replacements. They are not meant to be a substitute for your food. It should be used to add nutritional value to your existing diet/meal plan.

4 ) What if I will gain fats instead of muscles?

It is difficult to build muscle and lose fat at the same time. Mass gainers will help you gain muscle with some amount of fat but it won’t make you look fat and flab if your diet and workout are in check. Avoid eating junk/unhealthy food to stay away from unnecessary calories and give your muscle a great definition.

5 ) Should I take it with milk or water?

You can mix in both water or milk. If you need more calories, then mix in with milk or just stir it with water and enjoy your shake.

Maintaining the highest standards of quality since 1986, Optimum Nutrition (ON) is the most trusted fitness supplement brand that provides you with a comprehensive line of powdered, bar, tablet, capsule, and ready to drink products. ON has a customer centric approach - every ingredient is chosen carefully, tested and retested for compliance, quality assured by daily inspections of current Good Manufacturing Practices (cGMPs) compliant facilities, certified for Sport by NSF.

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