Mutant Mass - 15lb
Designed specifically for the strongest bodybuilders and weightlifters that walk the earth, MUTANT MASS is now being discovered by other hardcore and dedicated athletes seeking the most powerful gainer they can get their hands on. Now, our latest and greatest formula is here ready to help you unleash your fullest potential.
1,064 calories. 59.6g protein. The mass gainer engineered to sit lighter.
Most gainers use maltodextrin and dextrose. Mutant Mass uses a Smart Carb Blend — Maltodextrin + SusCarb™, a patented Highly Branched Cyclic Dextrin (HBCD) found in high-performance intra-workout products. Same calorie load. Different molecule. Designed for the hardgainer who has tried a gainer before and stopped because of how it felt.
Why the carb is the whole story
Every gainer subreddit has the same thread: "Which mass gainer doesn't make me feel sick?" The answer is almost never about protein. It's the carb.
Standard gainers use maltodextrin and dextrose — both high-osmolality carbs that pull water into the gut as they digest. That's where the brick-stomach feeling comes from. It's not willpower. It's chemistry.
The Smart Carb Blend pairs Maltodextrin with SusCarb™ — a patented Highly Branched Cyclic Dextrin (HBCD) with roughly half the osmotic pressure of maltodextrin alone. It clears the stomach faster and draws less fluid into the gut during digestion. Same calorie density. Fundamentally different gut profile.
HBCD is the headline carb in premium intra-workout products like Vitargo and Cluster Dextrin — products that retail at $80+ for the carb alone. Inside Mutant Mass, you get SusCarb™ (that same HBCD) as part of the Smart Carb Blend at gainer pricing. That's the moat.
References: Takii et al., Int J Sports Med 2005; Furuyashiki et al., Biosci Biotechnol Biochem 2014; Wilburn, Machek & Ismaeel, J Exerc Nutr 2021.
Five things this gainer does differently
- Smart Carb Blend — Maltodextrin + SusCarb™ (HBCD). Lower osmolality, faster gastric emptying, steadier fuel. The carb does the work the carb is supposed to do.
- POOLZYME Digestive Enzyme Complex — Multi-enzyme blend to help you absorb the calories, not just drink them. Most gainers don't include enzymes. The cost is real. The reason they skip it is margin.
- 5-source protein matrix — Whey concentrate, hydrolysed whey, whey isolate, pea isolate, and buttermilk powder. Fast- and slow-digesting sources in every serve. 59.6g per full serve, 29.8g per half.
- 14g sugar per 1,064 kcal serve — Leading competitor gainers run 17–21g in the same calorie bracket. Same calorie bracket. Less sugar to crash on an hour later.
- Flexible serving sizes — 6 scoops (280g) for 1,064 kcal all at once, or 3 scoops (140g) twice daily for 532 kcal each. The half-serve is genuinely stackable with regular meals without displacing appetite.
Who this is for
- You've identified as a hardgainer — you eat well, you train consistently, and the scale barely shifts
- You've tried a mass gainer before and stopped because of how it felt — brick stomach, constant fullness, bathroom emergencies
- You want something you can take every day without dreading it
- You read labels and notice when the first ingredient is maltodextrin
- You're looking to support muscle gain as part of a consistent resistance training programme
- You want the committed long-run option — 24 full servings is 3–4 weeks at one shake a day
Read the label. Then read theirs.
| Mutant Mass 15lb | Competitor Gainer 1 | Competitor Gainer 2 | Competitor Gainer 3 | |
|---|---|---|---|---|
| Lead carb | Maltodextrin + SusCarb™ (HBCD) | Maltodextrin | Maltodextrin + Oat Bran + Isomaltulose | Maltodextrin + Oat Flour |
| Digestive enzymes | POOLZYME complex | None | Light blend | None |
| Sugar per serve | 14g | 21g | 17g | 14g |
| Calories per serve | 1,064 | 1,250 | 2,130 | 1,210 |
| Protein per serve | 59.6g | 50g | 60g | 50g |
Competitor data based on leading mass gainers sold in NZ as at May 2026. Values vary by flavour and may be updated by manufacturers.
How to use it
-
Full serve — 6 scoops (280g): Mix in 480–960ml cold water or milk. Blended or shaken. 1,064 kcal, 59.6g protein. Use once daily on top of regular meals.
First time with this gainer? Start here for a few days before doubling up. SusCarb + POOLZYME is designed to sit lighter, but 1,000+ calories is still significant volume. Find your rhythm first.
- Half serve — 3 scoops (140g): 532 kcal, 29.8g protein. Take twice daily — easier to get down, steadier calorie intake, less impact on main-meal appetite. Good option if the full serve is displacing real food.
- Milk or water: Milk adds roughly 150 kcal and improves the Vanilla Ice Cream flavour considerably. Water works — keeps it lighter. Cold either way.
Common questions
Is this just sugar dressed up as a mass gainer?
No. The Smart Carb Blend pairs Maltodextrin with SusCarb™ (HBCD) — the bulk of the energy comes from complex carbohydrate, not free sugar. Total sugar is 14g per 1,064 kcal serve. Compare to 21g and 17g in leading competitor gainers. Less sugar doesn't mean fewer calories — it means the carb architecture is different.
What is HBCD / SusCarb?
SusCarb™ is a patented Highly Branched Cyclic Dextrin (HBCD) — a complex carbohydrate engineered from waxy corn starch. The resulting molecule — roughly 160,000–400,000 g/mol — has low osmolality (draws minimal water into the gut) and clears the stomach faster than standard maltodextrin. The same ingredient appears in premium intra-workout products at $80+ per tub for the carb alone. Mutant Mass combines SusCarb™ with maltodextrin in the Smart Carb Blend to maintain calorie density while improving the gut profile.
Will it sit lighter than what I've used before?
HBCD + POOLZYME is specifically engineered to address the gut issues high-calorie shakes cause — bloating, heaviness, and the fullness that kills appetite for the rest of the day. Start with the half serve and assess your own tolerance first. Individual experience will vary, but the formula is built for this problem.
Will it make me fat?
Mass gainers are calories. They don't decide where calories go — your training programme does. Used in a calorie surplus alongside consistent resistance training, you'll support muscle gain. Skip the training and eat at a surplus, and any gainer will add body fat. The exercise is the variable here, not the shake.
How long does the 15lb tub last?
24 full servings — roughly 3–4 weeks at one shake a day, or about 12 days at two half-serves per day. If you want to try the formula without committing to the full tub, the 5lb is also available on site.
What's in the protein matrix?
Five sources: whey protein concentrate, hydrolysed whey protein, whey protein isolate, pea protein isolate, and buttermilk powder. Fast- and slow-digesting proteins together. Per 280g serve: Leucine 6.1g · Isoleucine 3.3g · Valine 3.4g · BCAAs total 12.7g · Glutamine + Glutamic Acid 10.1g.
Does it contain allergens?
Contains milk and soy. Made in a facility that also handles dairy, wheat, gluten, tree nuts (almonds), eggs, peanuts, sesame seeds, bee pollen, molluscs, crustaceans and fish. Always read the full product label before use.
Full nutritional spec
Note: The nutritional information provided is a reference that may vary slightly per flavour and when product formulations are updated by the manufacturer.
