Supplements & Nutrition › Sports Nutrition
Mutant Mass
Weight gain powder with carbohydrates and protein
More about it ↓Quick take
In short: what each side says
AI panel · Reviewers — each opened up in full further down ↓
Best on Gemini (avg #8.0), weakest on Perplexity (#8.0)
Reviewers agree Mutant Mass packs on weight fast through sheer calories, tastes good, but brings a high fat and sugar load and can cause digestive trouble in some users.
The juries split — Divided. Check both sides before you commit.
Quick read · who it’s for
Main competitors
Top rivals in Sports Nutrition.
About
What it is.
Mutant Mass is a high-calorie mass gainer powder from Mutant, formulated around whole-food ingredients such as barley, sweet potato, and avocado rather than fillers or synthetic additives. Each serving combines a protein blend (whey concentrate and isolate, milk protein concentrate and isolate, casein) with a large carbohydrate load and a mix of EAAs and BCAAs, positioning it as a meal-replacement option for post-workout recovery or general calorie loading.
It comes in a 5-pound container across gourmet flavors like Vanilla Ice Cream, Cookies & Cream, Strawberry Banana, and Triple Chocolate, and is built for men and women who train seriously and need a straightforward, mixable way to add calories and protein without tracking multiple products.
The verdict
Mutant Mass delivers reliable muscle-building results with strong taste and mixability that buyers consistently praise, though some question its sugar levels and ingredient sourcing. At $44–$60, it's a solid choice for those prioritizing flavor and proven gains over full transparency.
Act one
What the machines think.
Several AI models read the category and place this product — model by model, list by list, over time.
Model by model?
How each AI sees it.
Best on Gemini (avg #8.0), weakest on Perplexity (#8.0) Averaging across the AI panel, Mutant Mass sits around #8.0 this snapshot.
Grok
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Didn’t rank Mutant Mass this snapshot.
AI Mode
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Didn’t rank Mutant Mass this snapshot.
Claude
Didn’t rank Mutant Mass this snapshot.
Rank trajectory?
Weeks of movement.
Act two · ★ new
What the people say.
The same product, judged by the owners who bought and filmed it — what they praise, what they knock, who it's for.
Video reviews?
What reviewers actually say.
AI summary of 4 reviews · as of Aug 2026
Reviewers agree Mutant Mass packs on weight fast through sheer calories, tastes good, but brings a high fat and sugar load and can cause digestive trouble in some users.
What they praise
- Delivers a large calorie, carb, and protein load in one serving, good for hard gainers
- Widely praised flavor, especially chocolate variants
- Mixes reasonably well despite huge scoop size
- Useful for people who struggle to eat enough through regular meals
What they knock
- Serving sizes are large and easy to misuse, leading to excess fat gain if not adjusted
- High sugar and fat content compared to some other gainers
- One reviewer reported severe digestive discomfort and gas
- Front-of-bag nutrition numbers can be misleading since they reflect multiple scoops
Synthesised from: Thomas Maw · Burn Em Out Fitness · shreddybrek · Freccero
Mutant Mass Weight Gainer Review & Taste Test
I'll Pump You Up
Serious Mass v Mutant Mass | Supplement Review (E12)
Thomas Maw
How To Use Mutant Mass: Requested Video
Burn Em Out Fitness
Mutant Mass Review: 14 lb Weight Gain in 10 days - The Best Weight Gainer?
shreddybrek
Mutant Mass Gainer Review: Is it worth it?
Freccero
Act three · ★ new
Do they agree?
Put the machine's rank and the owners' score in one frame, settle it with a verdict, and answer the only question that matters: should you buy it?
The bottom line
So should you buy it?
The AIs’ #8 pick in Sports Nutrition. Critics keep reserve at 3.5 / 5 — One reviewer had bad gastrointestinal side effects while others reported none.
Find your situation?
Made for some — wrong for others.
Who reviewers think this product is — and isn’t — for
For you if
Look elsewhere if
You need a proven, low-risk mass gainer with broad buyer consensus.
5476 ratings show deep market trust; Mutant is an established brand with a mature, settled product and consistent positive feedback across all dimensions.
You want to gain mass without overspending on supplements.
Mid-range street price with high ratings across all aspects; delivers mass-gain fundamentals without premium markup, though Quickmass offers similar results cheaper.
You want a mass gainer that mixes easily and works without fuss.
High marks for mixability and convenience signal a straightforward, out-of-the-box experience; no complex setup or configuration needed.
You demand top-tier quality in every dimension of a mass gainer.
High buyer rating (4.5/5) with strong consensus across taste, mixability, effectiveness, and safety; no glaring weak aspects, though not positioned as best-in-class.
You enjoy supplements that taste great and feel premium to use.
Strong taste and flavor reputation appeals to sensory experience; solid design reputation, though not positioned as a prestige or luxury brand.
Grounded in our buyer-review, reviewer-video, price and successor signals — a poor fit names a closer pick · as of Aug 17.
Frequent rivals?
What it competes against.
- Up Your MassMHPMutant leads 1–0 · 1 sharedRead
- Combat XL Mass GainerMusclePharmMutant leads 1–0 · 1 sharedRead
- QuickmassAllMax NutritionMutant leads 1–0 · 1 sharedRead
- Mass-PeakInner ArmourMutant leads 1–0 · 1 sharedRead
- Carnivor MassMuscleMedsMutant leads 1–0 · 1 sharedRead
- Mass InfusionNutrex ResearchMutant leads 1–0 · 1 sharedRead
- MRE LiteRedcon1Mutant leads 1–0 · 1 sharedRead
Alternatives by price · Same field?
Same field, less money.
Frequently asked
What buyers want to know.
Why does anyone consider Mutant Mass a good supplement?r/Fitness
Buyers consistently praise its taste, smooth mixability, and proven results for muscle gain. It delivers a convenient way to hit daily calorie and protein targets without extra cooking, which helps maintain a calorie surplus for training and recovery.
How do you feel about the drink Mutant Mass?r/gainit
Owners rate it 4.5 out of 5 across thousands of reviews. They rank its taste and effectiveness for mass gain highest (4.8 each), with strong marks for how smoothly it mixes and its convenience. Some buyers question its sugar content and want more ingredient transparency.
Difference between Whey Protein and mass gainer?r/Fitness
The grounding material covers Mutant Mass as a mass gainer but does not compare it directly to whey protein products.
I bought Mutant Mass gainer, it gives me diarrhea. Should I keep using it?
The grounding material does not address digestive side effects or troubleshooting for individual responses to this product.
Thoughts on Mutant Mass gainer?r/PHitness
Buyers report it mixes smoothly, tastes great, and reliably supports muscle growth and recovery when used consistently during training. Quality and safety ratings are solid (4.6 out of 5), though some users want clearer ingredient sourcing and lower sugar levels.
Source-tagged questions come verbatim from public forum threads · answers are ours
The recap
Where it stands today.
- PositionBest rank #8 across 1 intent tracked (slipped 4 this week).
- FootprintStrongest in Best Mass Gainers (#8).
- TraitsMost often described as “high calorie” (2 mentions).
- Closest rivalUp Your Mass (1–0 across 1 shared intent).
- MakerBy Mutant — see how it ranks across other intents on its brand profile.
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