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Mutant Mass Weight Gainer - 2.2kg / Chocolate Fudge Brownie
Mutant

Mutant Mass Weight Gainer 6.8kg

★★★★★
4.8 | 103 reviews |  8 Servings
£27.99 £39.99 £3.50/serving
56g Protein + 1100kcal 56g protein and 1100 calories per serving - high-calorie mass gainer for serious bulking phases.
Hard Gainer Format Calorie-dense formula for athletes who struggle to put on size - one shake covers a major surplus.
6.8kg Tub, Multi-Flavour Made for repeat use
Select Size
Select Flavour
Chocolate Fudge Brownie
Cookies & Cream
Low Stock
Strawberry & Banana
Vanilla
Triple Chocolate
Chocolate Fudge Brownie
Low Stock
Cookies & Cream
Low Stock
Strawberry & Banana
Low Stock
Vanilla
Low Stock
Triple Chocolate
Low Stock
Standard delivery
Next day (£5.99)
17,600+ Reviews
14-Day Returns
Est. 2005
Delivery & Shipping

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Standard Delivery 2-4 Working Days
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DPD Next Day Order by 4pm Mon-Fri
£5.99
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Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

Chocolate Fudge Brownie
Cookies & Cream
Strawberry & Banana
Vanilla
Triple Chocolate
Chocolate Fudge Brownie
Cookies & Cream
Strawberry & Banana
Vanilla
Triple Chocolate

56g protein + 1100kcal + 204g carbs per 280g scoop

Mutant Mass delivers 1100 calories, 56g of protein and 204g of carbohydrates per 280g serving (two scoops), with 6g of total fat and 18g of sugars. The protein blend spans whey concentrate, whey isolate, micellar casein, milk protein concentrate and egg albumin across five sources. The 6.8kg tub provides approximately 24 full-serving uses.

The five-source protein matrix provides both rapid (whey fractions) and sustained (micellar casein) amino acid release, which is relevant for hard gainers who consume the shake post-workout and then have hours before the next whole-food meal. At 56g protein per serving, Mutant Mass sits towards the high end of the gainer category for protein density at a given calorie load. 204g carbohydrates per serving from a multi-source carb blend provides a strong glycogen repletion stimulus post-training.

At 1100kcal per full serving and a 6.8kg tub size, Mutant Mass is built for trainees who take gaining seriously - not a supplementary snack but a primary calorie vehicle for hard gainers who cannot eat enough whole food to sustain a surplus. The large 6.8kg format reduces the cost per serving compared to smaller tubs and extends the supply through a bulking phase without repeated reorders.

Built for hard gainers, ectomorphic body types and anyone in a committed gaining phase tracking a meaningful calorie surplus. At 1100kcal per serving, fat gain is a real risk if training volume does not justify the intake - the product requires intentional use alongside a structured training programme. Not appropriate for people at maintenance or in a cutting phase. Contains milk, soy and egg.

Alternative: XL Nutrition XTRA Mass Gainer 5.2kg (50g protein, 1000kcal per 260g scoop) delivers 1000kcal and 50g protein per 260g scoop from an own-brand supplier.

Key Benefits

High Protein

High Calorie

Frequently Asked Questions

What is Mass Weight Gainer best used for?

Mutant Mass Weight Gainer is best used between meals or after training, when the additional protein and calories fit naturally into your daily intake. Treat it as a meal replacement or supplement rather than an extra on top of full meals. Timing matters less than hitting your overall calorie and protein target for the day.

When should I use Mass Weight Gainer?

Most people use products in this category after training, between meals or at another point in the day where higher calorie intake is easiest to repeat. Consistency matters more than chasing one exact timing rule.

Can I mix Mass Weight Gainer with milk?

Yes, mixing with milk adds extra protein and calories per serving and creates a thicker, creamier texture. Water keeps the calorie count lower and makes it easier to drink quickly. Most people choose based on whether they want to increase or control total daily intake from each shake.