Mutant Mass Dual Chamber is a weight gainer and mass gainer built to help you bulk up with a seriously dense protein and carbohydrate matrix. Key ingredients include a protein matrix of whey blends, micellar casein and milk proteins, plus whole food carbohydrates to fuel and keep going. Mutant is a long standing name in sports nutrition, trusted by bodybuilders for mass and performance.

Available Sizes & Variants:

2.72kg Mutant Mass Dual Chamber — Bulk option for serious lifters seeking maximum mass gains from a high calorie blend.

Benefits & Features:

• High calorie blend fuels rapid muscle gains.
• Protein matrix blends whey, casein and milk proteins for steady amino acids.
• Ample carbohydrates replenish glycogen post training and provide an insulinogenic spike that helps push amino acids into muscle tissue for better growth and quicker comeback between sessions.
• Contains fats from coconut and other oils to support energy and hormonal health.
• Intended for daily use alongside resistance training to help you reach muscle gain goals.

Mutant Mass Dual Chamber sits on Mutant's storied legacy of performance supplements, trusted by lifters chasing real mass. The blend uses fast and slow releasing proteins—whey blends, micellar casein and milk proteins—alongside whole food carbohydrates such as waxy maize starch and rolled oats for steady energy. A healthy fat mix from coconut oils, avocado and seeds helps support energy and hormonal balance, while tart cherry and cinnamon extract give natural flavour and a touch of antioxidant benefit. It's beloved by dedicated athletes for real world gains.

Carbo Blend (Waxy Maize Starch, Maltodextrin, Barley Starch, Sweet Potato, Rolled Oat), Mutant Mass Pro-Matrix (Milk) (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), Cocoa, Natural & Artificial Flavours, Salt, Sweetener (Sucralose), Emulsifier (Sunflower Lecithin), Enzymes (Lactase, Protease), Cinnamon Extract (Cinnulin PF®), Tart Cherry.;

• GTIN: 627933214528
• Manufacturer: Mutant
• Size: Choc & Choc Fudge Brownie
• Categories: Bodybuilding SupplementsBronzing DropsMutant SupplementsNew ArrivalsNew In Supplements & VitaminsSports Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

For best nutritional results, consume this 1100-calorie serving, which delivers 192g of energy-rich carbohydrates and 56g of muscle-supporting protein. Monitor your 12g fat intake, including 6g saturates and 0.1g trans fats. Balance your minerals with 580mg sodium and 840mg potassium. Note the 90mg cholesterol content. Benefit from 8g of digestive-friendly fiber while managing the 18g sugar portion.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Whey Protein

Whey protein is a high-quality dairy protein containing essential amino acids that support muscle repair and recovery as part of normal protein metabolism.

This formula uses a dairy protein blend derived from whey and other milk proteins, providing a complete protein matrix with both fast- and slow-digesting components.

What Does Whey Protein Do?

Whey protein helps maintain muscle protein synthesis and supports recovery after exercise when combined with resistance training, contributing to the maintenance of lean mass. It participates in normal muscle metabolism and supports protein balance during daily activity.

Dr. Kreider of an American university found that high protein intake supports muscle growth when combined with resistance training.

This product is not intended to diagnose, treat, cure, or prevent any disease.

CONTAINS: Milk, Soya, Gluten (Wheat)
MAY CONTAIN: Nuts, Peanuts, Egg
FOR BEST RESULTS: Store in a cool, dry place away from direct sunlight
BEFORE USE: Check seal integrity
DAILY SERVING: Follow recommended portion size
IF ALLERGIC: Avoid product if sensitive to listed allergens
CROSS-CONTAMINATION: Manufactured in facility handling specified allergens
WHEN IN DOUBT: Consult healthcare provider

Welzo selects brands that meet our rigorous standards for quality, safety and performance. Mutant stands out as a prominent sports nutrition brand with a long-standing, positive reputation among bodybuilders and athletes, recognised for its consistent market presence and trusted position in the category. This heritage informs our confidence in Mutant Mass Dual Chamber as a solid partner for muscle-building nutrition, and it supports our commitment to offering customers reliable, industry-leading options.

The manufacturer’s established standing and enduring visibility in specialist retailers reflect a proven track record in mass and performance supplements. This brand was evaluated by our team of medical experts for alignment with the certifications we require, ensuring our partnership rests on verified quality processes. Mutant’s emphasis on high-quality formulations for weight gain aligns well with the product’s macronutrient-forward profile, making it a natural fit for this supplement.

Choosing Mutant Mass Dual Chamber underlines Welzo’s commitment to a science-led, consumer-friendly approach and reinforces trust and value for customers seeking serious fitness results.