Skip to content Skip to navigation
Over 50.000 positive customer and product reviews
International deliveries over +30 countries worldwide
Free standard delivery on orders over £45

Mammoth Mass

Interactive Nutrition
  • 1300 kcal per shake
  • 60g of high quality protein per serving to help the growth of muscle
  • 230g of carbohydrate per serving to help the body recover

Product Overview

High Protein High Protein
Low sugar Low sugar

Iconic high-protein, calorie dense powder

If you want to increase muscle and size then Mammoth Mass from Interactive Nutrition is one of the most iconic weight gain powders on the market. Each serving of Mammoth Mass provides 60g of protein to support the growth of muscle, 230g of carbohydrate, and over 1300 kcal to increase the number of calories in your diet. Plus, Mammoth Mass also contains added amino acid matrix, enzyme complex and medium chain triglycerides (MCTs). Available in a range of sizes and great-tasting flavours.

Packed with high-quality ingredients to help build size

Mammoth Mass is packed with high-quality ingredients and features a premium protein blend. The mix of whey protein concentrate, whey protein isolate, micellar casein and calcium caseinate provides a complete protein source. The source of carbohydrate is maltodextrin and helps to aid recovery after intense, long-lasting exercise, so long as you take on board 4g/kg body mass within 4-6 hours after exercise. In a crowded field, Mammoth Mass stands out as a premium option for anybody wanting to get bigger!


  • Added amino acid matrix

  • Added enzyme complex
  • Added medium chain triglycerides (MCTs)

Suggested Use

Just mix two scoops of Mammoth Mass (320g) with 591ml of water to create a tasty, calorie-packed shake.

Nutritional Information

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

Customer Reviews

Overall Rating (4.5)
Write your review here. For complaints and questions we would like to refer you to our customer service.
Please enter a headline
Please enter a comment
Please enter a rating

The taste is acceptable (chocolate), it's early to write about the results, the price could be more affordable

Review by Pedro on Feb 10, 2023
Verified purchase
The taste is acceptable (chocolate), it's early to write about the results, the price could be more affordable


Review by Peter on May 13, 2022
Very good


Review by Valentinas on May 7, 2022
very good protein

Waited long for this!

Review by David Maisey on Apr 9, 2022
Superb product, great delivery! I had been waiting for these guys to get more in stock. Best stuff around…please don’t run out again! Lol


Review by Shad on Jun 17, 2021
Works as it should. Started to notice weight gain in a matter of weeks


Review by Dave Maisey on Apr 22, 2021
Great tasting, good ingredients top product

cheap price

Review by qaiser on Oct 16, 2020
excellent price

works good

Review by Yazoo on Mar 24, 2023
Verified purchase
Translate review into English

Super produit

Review by Remy on Mar 18, 2023
Verified purchase
J’ai essayé que le goût chocolat il est vraiment bon !
Translate review into English

Mass gainer

Review by Gast on Mar 11, 2023
Verified purchase
Goeie mass smaak is ook lekker beste is met melk topp
Translate review into English


Stay up to date with recent news, advice and weekly offers