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Optimum Nutrition (ON) Serious Mass, 12 Lbs/5.4 Kilograms

Optimum Nutrition (ON) Serious Mass, 12 Lbs/5.4 Kilograms

6,199.00 4,799.00

In stock

6,199.00 4,799.00


  1. Bright Commodities (✓Authorized)
Weight: 12 Lbs



50g of Protein per Serving of 334g
In every serving of this supplement, you get 50 grams of protein and creatine, glutamine and glutamic acid to fuel your hard working muscles and for a faster muscle recovery.

Weight gain formula enhanced with 1250 calories per serving
Along with fulfilling 100% of your daily protein requirement, it also gives you 1250 calories and a massive 252g of carbs per serving so that you gain dense slabs of muscle mass.

Enhanced with 25 Essential Vitamins and Minerals
Enriched with 25 vital nutrients, it fuflills your body’s nutritional requirement, keeping you focused on your fitness goals. Other key energy accelerators like creatine and glutamine give you intense burst of energy, reduce catabolism and speed up your recovery phase post-workout.

ON Serious Mass Gainer is one of the most consumed mass gainers around the globe. Optimum Nutrition is one of the most trusted bodybuilding supplements brands, delivers high-quality mass gainers for effective results. Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving of 50 grams of protein for muscle recovery, this powder makes the ideal post-workout and between meals shake for increasing 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.


If you are looking forward to gain healthy weight, strong muscle mass and also pack some good caloric amount without consuming them directly, the ON Serious Mass is the ultimate premium quality mass gainer to go for. Consuming ON Serious Mass is pretty easy. You can take the mass gainer shake either between meals or post-workout for effective results. This is not about putting on weight, it is a effective formulation to gain good muscle mass and overall physique development. The muscle building is the result of an amazing 50 grams of protein that you get from per serving of 334 grams of the ON Serious Mass 6lbs supplement. And while the 25 essential minerals and vitamins fulfill the requirement of overall fitness.


Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Sweet Dairy Whey), Natural And Artificial Flavors, Vitamin And Mineral Blend (DiPotassium Phosphate, Magnesium Aspartate, DiCalcium Phosphate, Calcium Citrate, Ascorbic Acid, Zinc Citrate, Niacinamide, D-Calcium Pantothenate, Beta Carotene, D-Alpha Tocopheryl Succinate, Copper Gluconate,  Selenomethionine, Ferrous Fumarate, Thiamin Mononitrate, Manganese Amino Acid Chelate, Riboflavin, Pyridoxine Hydrochloride, Folic Acid, Chromium Polynicotinate, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Triglycerides, Lecithin, Malic Acid, Acesulfame Potassium, Sucralose, FD&C Yellow #5.Allergen Information: Contains Milk, Egg, Wheat (Glutamine Peptides) And Soy (Lecithin) Ingredients.


Add two heaping scoops of Serious Mass to a blender filled with 700ml of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients (see “Supercharge Your Serious Mass on the opposite panel) and blend for an additional 30-45 seconds. Mixing 2 scoops of Serious Mass with 700ml of nonfat milk or low-fat milk instead of water will result in a creamier, thicker, 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.

Additional Information

DIMENSIONS16 x 9 x 9 cm kg
BRANDOptimum Nutrition
FLAVOURBanana, Chocolate, Chocolate Peanut Butter, Strawberry, Vanilla
GOALBulking Up

Supplement Facts

19 reviews for Optimum Nutrition (ON) Serious Mass, 12 Lbs/5.4 Kilograms

  1. 5 out of 5


    awesome product, help to gain weight. not that fast but it is work…buy 12lbs bag because it is cheaper than buying 2 times 6lbs one
    Really satisfied

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  2. 4 out of 5


    Tasted great and mixed really well.

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  3. 4 out of 5


    Serious mass is a great mass gainer. Don’t think I’ve seen another with more calories but taking the prescribed amount of powder is a huge shake. Only downfall is that it’s high in carbs and sugar. If your a hardgainer this is definitely a protein powder for you. You will lose some definition but will visibly put on the extra pounds. Mixes pretty well in shaker but does have clumps, taste great, much better with milk then water. Enjoy

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  4. 4 out of 5


    Great teast especially when you mix it with ice cube and one banana and a little bit of hershey , also great price

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  5. 5 out of 5


    This will probably be the greatest review on the product from somebody who properly knows their stuff and has done countless of hours of research –

    Let’s start off with the obvious – did it work? Of course it did, and so would any other product on the market work, because at the end of the day no matter the product, you’re just paying for calories in liquid form. So yes any mass gainer will work.

    Effects – I gained about 6-7KG in 2 months (1 tub and 1 bag), but that was with very intense eating, I lost 3KG after I stopped the product, which is to be expected. I noticed I gained a belly which stuck out compared to other mass gainers for example from the sister brand BSN, I haven’t noticed any enlarged stomach.

    Taste – I ordered Chocolate, and the taste was vile with water, so I always used full fat milk #extragains and the taste was more akin to a milkshake. It’s not the greatest of tasting things, but it’s acceptable and definitely better than some other products I’ve tried.

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  6. 5 out of 5


    Important information – I doubt any ectomorph is going to be able to tackle this supplement in a normal serving, so don’t be fooled, by the claims of the high calories because you probably won’t be taking them in most of time. I tried full serving and to down it with and hour and a half, ended up vomiting, when I did start and whilst I was on it I did notice a lot of bad smelling gas and needing to use the toilet a bit more for the runs. Do brace yourselves for acne on your face, chest and back when using this product!

    I also wouldn’t recommend this product to anyone who isn’t working out, you could be doing harm to your body as the contents of some things are very high.

    1 out of 1 people found this helpful. Was this review helpful to you?
  7. 5 out of 5


    The only good and brutally honest review of my experience

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  8. 5 out of 5


    Hi, am a skinny guy weighed 55 kg in feb 2020 so I decided to try this product, after a month usage I weighed my self today am at 60.5 kg,,, it’s a good produc

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  9. 5 out of 5


    I thought I would give this a try and I’m satisfied to say I actually gained weight, though it kinda depends on your body metabolism. But, if you’re looking to gain some weight, go for it! ? After some research, of course.

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  10. 5 out of 5

    Sreekumar M

    original product

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  11. 5 out of 5


    good stuff

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  12. 5 out of 5


    Authentic product received

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  13. 5 out of 5


    To check authenticity of any ON product
    Call 01149594959

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  14. 5 out of 5

    Mohsin Ali

    100% original product with authentication code

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  15. 5 out of 5

    Mohsin Ali

    Im certified golds gym fitness trainer.. I got 100% genuine, original product by fitbasket indian….and superb delivery by fedex thanks

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  16. 4 out of 5


    good product

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  17. 4 out of 5


    My Opinion

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  18. 5 out of 5


    I used it for many months and I used to take 2 spoons a day.
    I started gaining like 4 kgs in first week of use followed by some small increase in weight gradually.
    So I would suggest you to try this product if you are actually looking for gaining weight without putting on too much fat but dont forget to do gym during its intake otherwise it will work the same way as any other carb intake

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  19. 4 out of 5


    original product

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