Leave Humanity Behind!
Gains In Muscle Mass!*
8.5  out of 10  (131 Reviews)
3 Sizes
1 Serving
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1 Flavor
Triple Chocolate
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Price: $7.99  ($7.99 / Serving)
Flavor Rating: 8.5

Product Overview

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A new Breed of muscle
Mass Gainer*

Spawned from countless hours of research and testing on some of the most massive MUTANTs on the planet, MUTANT MASS is the revolutionary muscle mass gainer that delivers.* Every serving of MUTANT MASS delivers to your body an array of macronutrients assembled for those who TRULY want to live the MUTANT life. Designed to help you pack it on. MUTANT MASS — it's the new breed of muscle mass gainer.*

Leave Humanity Behind

To be MUTANT means being abnormal. Others may think you're crazy, but you're on a quest for mutated body proportions. You are focused and driven. You feel more at home in the gym than anywhere else. You strive to lift super human weights every day, like a man possessed. You simply will not settle for average. You demand the best. And your nutrient demands are just as abnormal — you are MUTANT.

Since 2005 MUTANT MASS has been going beyond hardcore. In the simplest terms consuming 1 serving per day loads you up with 1060 calories, 52 grams of protein, and a blend of carbs (with waxy maize) and fats with MCT's. All, which in addition to your normal diet, will help you increase your weight.* MUTANT MASS also contains extra glutamine, Cinnulin PF® cinnamon extract, flax seed powder and colostrum to benefit MUTANTs.*

  • Multi-award winning weight gainer — sold in over 100 countries
  • 15 lb bags delivering over 1,000 specially engineered calories per serving
  • 52 grams of quality protein featuring a whey, casein & egg protein blend
  • Includes carbs, waxy maize, MCT's, Colostrum, Cinnulin PF & more
  • Available in multiple incredible flavors!
  • Each and every powerful 15 pound MUTANT bag contains — 1,352 GRAMS OF PROTEIN, 4,576 GRAMS OF CARBOHYDRATES, & 27,560 CALORIES!

Ratings & Reviews

Overall Rating
131 Ratings
Verified Buyer Rating
29 Ratings
Average Flavor Rating
9 Flavors
Top Rated Flavor
Chocolate Hazelnut
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Dec 14, 2018
  • 9 Cookies & Cream

The best tasting mass gainer I have ever used. Tons of calories and helped me increase my lifts a ton.

Nov 30, 2018
Verified Buyer
  • 9 Strawberry Banana

This is a great weight gainer if you don't use it how they suggest. Like others I think 4 scoops is way to much at one time (fills 80% of a blender bottle). In a normal sized blender bottle I mix 1-2 scoops with either all water, of half milk half water. Some water is needed to make sure it mixes well if you do this, this is one of the best protein shakes I've had. I have gotten the 15 lb bag of strawberry banana twice, and am about to order a third, but these bags last me a lot longer than the "serving" size suggest, which is 24 if you have one a day. Usually last me 2+ months, I eat about 2,000-2,500 calories a day and drinking 2 scoops of this with working out has allowed me to gain good weight, not crazy fast but I am very pleased with how it's worked for me.

Nov 05, 2018

Really bad mass I drink 3 time even 2 scoop I feel Very bad my stomach hurt me I bring out what I even eat all day please no one tray it

Apr 25, 2018
  • 8 Coconut Cream

The 5.5 pound bag says there is 24 serving in it? please tell me how. Tastes great and mixes extremely well. Will most likely buy it again.

Mar 02, 2018
  • 5 Triple Chocolate

The worst gainer I've ever had. I have never reviewed a product in such a negative way but it's justified. When I bought it the price was great, even when you have 38 grams sugar per serving. The taste is not bad, could be better but I'm not planning to.wait.for improvements. The first time I took it I I was in the bathroom for an hour. Generally my stomach get used to this after the second time, third maximum. But with this one every time is like the first time ( but not romantic). The only mutant mass I see is on the toilet. And you can bet on what.the say " leave humanity behind" well... BB, I did it no human goes to the bathroom like I do...

Feb 21, 2018
  • 7 Cookies & Cream

This mass gainer is one of the best out there in my opinion. The taste of cookies and cream with water is actually okay and it goes down very fast. I prefer water over milk at all tine so thats perfect. The aftertaste can however be debated but ocerall it is a good one. Def recommended :)

Nov 21, 2017
  • 10 Cookies & Cream

Love the product, great tasting goes down easy. As Alot of you will know putting on weight is about calories. To gain weight you must eat surplus of what your body needs. So anything that puts you over you daily calorie intake is going to make you gain weight. So spending this much on shakes when you could just sort a good diet seems mad. But for someone who finds it hard to eat that much in a day this is the answer. I need to eat roughly 4000 calories for my metabolism and training schedule and I can't eat for ****. So just 2 shakes a day at 4 scoops a shake mixed with milk. Is me 3 quarters of the way through my daily intake. Takes away half the battle for me and I'm in the best shape of my life.

Oct 15, 2017
  • 10 Cookies & Cream

Best tasting mass gainer I've had, im 16 and approx 71Kilos and I will post the results after I'm nearly done! 4 scoops seems overboard so I do 2 and oats with 500ml of milk and it's divine

Feb 16, 2017
Verified Buyer
  • 8 Cookies & Cream

The flavor took me a little bit before I started to like it. Worked great though, packed on 20lbs which is saying A LOT. Weighed 125lbs for years and now I weigh 145. Shipping was ridiculously fast!! Took only 2 days to get to me and they gave me a bunch of free stuff as well. Awesome site.

Feb 06, 2017
  • 10 Triple Chocolate

chocolate hazelnut what an incredible flavor dudes you should give it a try it's the best protein flavor I've ever tried. If ur looking for bigness, it's gonna make u big, real big, but don't ask me big of what,,,

Feb 02, 2017

This product made me wanna throw up.

Jan 31, 2017
  • 8 Triple Chocolate

So I litterally created an account just for posting a review about this. XD Well, I've decided to buy this product after seeing so many reviews of people who use this gainer in various country. So, first of all to say, the flavor tastes not bad. Well not too good either. I cut the servings in half ( 2 scoops in the morning, 2 scoops after-workout at evening), shakes pretty easy and no clump in the bottle. 2 scoops with 500 mL water, still tastes sweet and made my stomach bloated, felt like I would not eat for half of the day after taking 130g of it. Can't imagine if one takes full servings of 4 scoop in one shot!! ( they are the mutant, perhaps ). About the "Mutant Gas" thing, I didn't feel anything about that. It went normal and just fine. No serious side effects. I am 22, weight@ 70 kg , and 179 cm tall. I will post the updated review after finishing this 15lbs gainer in a month. Hope this helps!!!

Jan 25, 2017
Verified Buyer
  • 8 Triple Chocolate

I split the serving in 2 using water, milk would bloat too much. Either 1 before workout and after dinner or 1 as lunch and 1 after dinner for off days. I feel that it gave me enough extra calories, carb, protein etc to help push my weight to where i wanted to be.

Nov 16, 2016
  • 6 Cookies & Cream

This stuff made me feel recurrently bloated – it was like digesting cement. Never consume Mutant Mass prior to a night out – bubble guts all round otherwise. Value For Money Usually retailing at around £68 for a 6.8kg bag, value-for-money is pretty darn brilliant in my opinion. Obviously it’s not low-priced, but for what ever you'll get, it is, for me personally, one of the better value weight gainers on the market – and definitely a safer bet than many of the bargain basement brands out there.

Oct 29, 2016
  • 10 Cookies & Cream

What's in MUTANT Mass

1 Serving Triple Chocolate
Serving Size 1 Packet (280g)
Servings Per Container about1
Amount Per Serving % DV
Calories 1,100       
Total Fat 12 g 15%*
Saturated Fat 6 g 30%*
Cholesterol 90 mg 30%
Sodium 580 mg 25%*
Total Carbohydrate 192 g 70%*
Dietary Fiber 8 g 28%*
Total Sugars 18 g       
Protein 56 g 112%*
Calcium 440 mg 34%
Iron 3 mg 17%
Potassium 840 mg 18%
Carbo Blend (Maltodextrin, Waxy Maize [Corn] Starch, Barley Starch, Sweet Potato, Rolled Oat), Mutant Mass Pro-Matrix (Whey Protein Concentrate, Hydrolyzed Whey Protein, Whey Protein Isolate, Micellar Casein Protein, Milk Protein Concentrate, Milk Protein Isolate), Lipid Foods Blend (Fractionated Coconut [MCT] Oil, Avocado, Flax Seed, Pumpkin Seed, Sunflower Oil), Thickeners (Defatted Soybean, Pea, Guar Gum).
* Percent Daily values are based on 2,000 calorie diet.
** Daily Value (DV) not established.
Other Ingredients:
Cocoa (treated with alkali), Natural & Artificial Flavors, Salt, Sucralose, Sunflower Lecithin, Enzymes (Lactase, Protease), Cinnamon Extract (Cinnulin PF®), Tart Cherry.
Contains: milk, soy, tree nut (coconut). Produced in a facility that also handles ingredients from: egg, wheat, peanut, tree nut (hazelnut). Also contains barley, oat.

Directions For Mass: As a dietary supplement, add 24-32 fl oz (720-960 mL) of water to a blender or large shaker cup, then add 4 scoops of MUTANT MASS, blend or shake for 20-30 seconds. 

Warnings: This product is intended to be used as a dietary supplement by healthy adults. Packed by weight, not by volume. Settling of product occurs after filling. Keep out of direct light; store in a cool, dry place. Do not use if bag is torn, broken or open. Should be consumed in conjunction with a nutritious diet and with an appropriate exercise program. Consult a physician before using: if you have any ailments or conditions; any product, ingredient or health concerns; before starting any diet or exercise program. Keep sealed when not in use. KEEP OUT OF REACH OF CHILDREN.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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