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  • For Muscle Building & Weight Gain Goals
  • 1,250 Calories per Serving to Help Boost Calorie Intake ¹
  • 50 Grams of Protein per Serving to Help Build and Maintain Muscle ¹ ³
  • 252-254 Grams of Carbohydrates per Serving to Help Fuel Workouts ¹

Product Overview

For Muscle Building & Weight Gain Goals

SERIOUS MASS is the ultimate muscle building and weight gain formula. With 1,250 calories per 2-scoop serving and 50 grams of protein to support muscle recovery, this 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 support your weight gains goals.¹


  • High-Calorie Formula Supports Muscle Building³ and Weight Gain Goals¹
  • 1,250 Calories per Serving to Help Boost Calorie Intake¹
  • 50 Grams of Protein per Serving to Help Build and Maintain Muscle¹ ³
  • 252-254 Grams of Carbohydrates per Serving to Help Fuel Workouts¹
  • 3 Grams of Creatine Monohydrate per Serving
  • 25 Vitamins & Essential Minerals

Suggested Use

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

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (4.7)
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First Experience

Review by James on Sep 19, 2023
Verified purchase
I have been super skinny my entire life. I've never been able to gain any weight. I'm what they call a hard gainer. I'm now 64. As we age, men start to lose muscle mass, which can lead to a number of health issues affecting bone density and osteoporosis, which can be offset through weight training. At the recommendation of a friend, he suggested I should try Serious Mass in order to bulk up and add some muscle weight. I first tried mixing it with water, but I didn't like the taste. However, on the second round, I mixed it with lowfat milk, which was a real game changer. It really tastes like a milkshake. I started out with a half serving, as they advise, working up to a full two scoop shake. So far, I've put on six pounds, and I couldn't be happier. I'm working with a personal trainer who is helping me build strength for the long run. It's never too late to build a body that you love.

Greatest product

Review by Nik on Aug 18, 2023
Verified purchase
Love it and use it daily to maintain weight in my extremely active lifestyle

Improved !

Review by M.G on Aug 10, 2023
Verified purchase
I can tell , they have made the MASS PROTEIN much easier to dilute on a shaker bottle. Previously you would get a lump here and there while shaking. Really happy and satisfied with the protein . It’s lighter but heavier on the training. Hands down , best protein powder on the MARKET !


Review by Anonymous on Aug 10, 2023
Verified purchase
Quality, delivery - 💯

Good suplement

Review by Mostafa on Aug 8, 2023
Verified purchase
I bought it 2 times and really amazing...

Fast delivery

Review by Angerleta Gordon on Jul 10, 2023
Verified purchase
Great product for me and my family


Review by Ivan on Jun 16, 2023
Verified purchase
I think this is a very helpful product I can already see the difference

Best one to gain weight

Review by Anton on Jun 12, 2023
Verified purchase
Mass serious weight gainer helped me to gain some extra kgs. I highly recommend this for people who wants to gain weight

Good product

Review by Kaikane on Jun 7, 2023
Verified purchase
Very good to gain weight and muscle

Bulking up

Review by Darren on Jun 4, 2023
Verified purchase
Perfect for the skinny guy trying to bulk up

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