ON (Optimum Nutrition) Serious Mass Chocolate (6lb)
ON (Optimum Nutrition) Serious Mass Chocolate (6lb)
ON (Optimum Nutrition) Serious Mass Chocolate (6lb)
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ON (Optimum Nutrition) Serious Mass Chocolate (6lb)

Enhanced with 25 essential vitamins and minerals for explosive muscle growth

(5)2 Ratings
MRP   3699 35514% Off
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Non Veg
2882 (gms)
21 (cm) x 21 (cm) x 26.5 (cm)

About Optimum Nutrition Serious Mass

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 instant 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. A supplement for athletes and body builders to gain weight. Hard mass gainer is enriched with essential nutrients like whey protein concentrate (up to 80% protein) and soy isolate derived from soy. It is a perfect combination of whey protein concentrate and miscellar casein, a fast and slow digesting proteins and carbohydrates that provide sustained energy and accelerates recovery times. Hard mass gainer makes sure the body has a consistent supply of proteins, vitamins and minerals for muscle growth. Carbohydrates present optimizes and supports the body to build dense and high quality muscle mass. Hard mass gainer consists of major vitamins and minerals to prevent deficiencies. This product is intended to gain weight. Whey is a by-product of cheese and curd manufacturing. Once milk is coagulated, it separates into curds and whey. Whey has a high biological value & consists essential amino acids.  Whey protein can be classified as concentrate, isolate and hydrolysate.

Whey Protein Concentrate (WPC) 

  • 80% protein concentration by filtration method. 
  • This can be increased to 90% by micro filtration. 
  • Includes fat and carbohydrates (in the form of lactose)


  • Contains BCAA and essential amino acids
  • Improves muscle size
  • Easy to digest
  • Easy to mix and great in taste
  • 1,250 Calories
  • 50 Grams of Blended Protein
  • Over 250 Grams of Carbohydrates with NO ADDED SUGAR
  • Creatine, Glutamine and Glutamic Acid
  • 25 Vitamins and Essential Minerals
  • Peptides, Choline, Inositol and PABA.

Optimum Nutrition Serious Mass Ingredients

  • Maltodextrin
  • Protein blend (Whey protein concentrate, Calcium caseinate, Egg albumen, Sweet dairy whey)
  • Cocoa processed with alkali
  • Natural and artificial flavours
  • Vitamin and mineral blend (dipotassium phosphate, Magnesium aspartate, Dicalcium phosphate, Calcium citrate, Ascorbic acid, Niacinamide, Zinc citrate, beta carotene, d-calium pantothenate, vitamin C, vitamin D, vitamin E, B1, B2, B3, B6, folic acid, biotin, calcium, ferric orthophosphate, vitamin B12)
  • Lecithin
  • Medium chain triglycerides
  • Acesulfame potassium

Optimum Nutrition Serious Mass Nutrition Facts

1 serving of 334 gm (2 scoops) contains: 

  • Energy                     1250 Kcal 
  • Protein                         50 gm 
  • Dietary fiber                 4 gm 
  • Sugars                          20 gm
  • Carbohydrates         252 gm 
  • Total fat                       4.5 gm 
  • Cholesterol                 80 mg
  • Vitamin A               5000 IU
  • Vitamin C                   60 mg
  • Vitamin D                 200 IU
  • Vitamin E                    30 IU
  • Thiamine                    4.8 mg
  • Riboflavin                      4 mg
  • Niacin                           50 mg
  • B5                                  25 mg
  • B6                                   5 mg
  • B12                                10 ug
  • Calcium                      590 mg
  • Iron                                 8 mg
  • Iodine                           150 ug
  • Magnesium                140 mg
  • Zinc                                15 mg
  • Selenium                      70 ug
  • Copper                          1.6 mg
  • Manganese                    2 mg
  • Chromium                   120 ug
  • Molybdenum               75 ug
  • Sodium                        410 mg
  • Potassium                1560 mg
  • Creatine Monohydrate  1 gm
  • L-glutamine               500 mg
  • Glutamine peptides  500 mg
  • Choline bitartrate      250 mg
  • Inositol                         250 mg
  • PABA                                5 mg

Optimum Nutrition Serious Mass Flavors

  • Milk chocolate

Optimum Nutrition Serious Mass Dosage 

  • Add two heaping scoops of Serious Mass to a blender filled with 24 oz of water. Blend for 45-60 seconds. Then add a few ice, if desired
  • Ideal to take between workouts, between meals and before bed.
  • Not to be substituted with meals. 
  • Not be used for medicinal purposes.   
  • Consult your dietitian/ certified gym trainer prior to confirm dose along with diet and exercise regimen.   

Optimum Nutrition Serious Mass Storage 

  • Keep the lid tightly closed. 
  • Store in a cool, dry and dark place, away from direct sunlight.
  • Keep out of reach of children.

Optimum Nutrition Serious Mass Warning 

  • Consult your dietitian/ certified gym trainer prior to use. 
  • Not recommended for diabetics, pregnant & lactating mothers. 
  • Do not exceed recommended serving and daily intake.

Terms and Conditions

The information and statements regarding the product and its description have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor / dietician / gym trainer before the consumption of any supplement. Read the label on the product carefully before consumption. The results from the product may vary from person to person.

Questions & Answers Ask Question

Total Questions 7
Have a question about this product? Ask Here

Is gyming required while using ON (Optimum Nutrition) Serious Mass in the diet? Reply to this Question


ON (Optimum Nutrition) Serious Mass is an ideal product for the post-workout recovery. As per gym-ing, it depends on your body requirements. If you are interested in building lean muscles, then you need to follow a proper workout regime.by Urvi Bhandari on Jun 28, 2017


What is the verification that ON (Optimum Nutrition) Serious Mass is original? Reply to this Question


ON (Optimum Nutrition) Serious Mass is an original product procured from the International Importer. The product bears the seal and stamp of the importer.by Urvi Bhandari on Jul 13, 2017


Does ON (Optimum Nutrition) Serious Mass help to gain weight without fat? Reply to this Question


ON (Optimum Nutrition) Serious Mass helps you build lean muscles and doesn't increase your cholesterol levels. Thus, it doesn't increase the body fat. Better results can happen if its intake is coupled with proper exercise regime.by Rattika Chawlla on Jan 09, 2018


On serious mass gainer contains scoop inside or not ..and it's sealed or unsealed inside ?? Reply to this Question


Yes, On Serious mass gainer is completely sealed as made by the manufacturer.by Rattika Chawlla on Jan 09, 2018


What is the proof that ON(Optimum Nutrition) serious mass is not fake? Reply to this Question


The ON-Serious mass is an original product procured from the International Importer. Optimum Nutrition(ON), is a part of Glanbia, a leading international cheese and nutritional ingredient group. The brand has gained trust worldwide. OPTIMUM NUTRITION - SERIOUS MASS is a 100% original product manufactured and sold by trusted brands,The product bears the seal and stamp of the importer.by Rattika Chawlla on May 09, 2018

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Ratings & Reviews


2 Ratings & 2 Reviews

Share your thoughts with other customers

This is a nice productby Kanhaiya Jha on Jul 10, 2017

Good product. Nice product. Very good product. Felt like shaktiman after using this product.

Good flavour😋by Anil on Aug 28, 2017

After use this product I got right weight

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