Mutant Mass Extreme is a calorie rich mass gainer that helps you bulk up when eating enough is the tricky part, delivering energy and protein to support growth. It uses a three phase whey protein blend to fuel muscles with amino acids across the day, aiding recovery after demanding sessions. [This product is backed by a brand with a longstanding focus on weight gain and real world usage], it leans on whole food carbohydrates and fats.

Benefits & Features:

• Supports high calorie intake for rapid mass gains.
• Delivers protein from a multi phase whey protein powder blend to sustain muscle protein synthesis.
• Carbohydrates come from a clean blend of maltodextrin and starches, giving steady energy for workouts and shakes
• Supports recovery with added glutamine and BCAAs, helping you bounce back faster between sessions and stick to your training plan for ongoing gains and consistency.
• Calorie dense formula designed for quick mixing to fuel meals on the move with muscle building protein powder.

Mutant Mass Extreme is built around the idea that hard gainers deserve serious calories. The formula blends whole food carbs from barley, rolled oats and sweet potato with fats from coconut oil, avocado and pumpkin seed. The protein comes from a three phase whey protein blend and is supported by added glutamine and BCAAs to aid recovery. An enzyme blend helps digestion, while cinnamon extract and tart cherry flavour add finishing touches you’ll enjoy.

Calories, Total Fat, Saturated Fat, Trans Fat, Cholesterol, Sodium, Total Carbohydrate, Total Sugars, Incl. Added Sugars, Protein, Vitamin D, Calcium, Iron, Potassium

• GTIN: 811662029496
• Manufacturer: Mutant
• Size: Triple Chocolate / 2720 grams
• Categories: Bronzing DropsMutant SupplementsSports SupplementsWeight Gainers & Muscle Mass Gainers
• 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.

Mix 4 scoops (285g) of MUTANT MASS EXTREME 2500 with 475ml of water or milk in a shaker or blender for 15-20 seconds. Consume 1-2 servings daily, ideally post-workout or between meals to support muscle growth. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. This product may expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Consult a healthcare professional before use if pregnant, breastfeeding, taking medication, or have a medical condition. Do not exceed the recommended daily dose.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Whey Protein

Whey protein from a multi‑phase blend provides a high‑quality source of amino acids to support muscle recovery and growth. This form combines whey concentrate, whey isolate, and hydrolysed whey to optimise digestibility and utilisation.

What Does Whey Protein Do?

Whey protein participates in supporting muscle protein synthesis and helps maintain positive protein balance as part of a balanced diet. It also supports normal muscle function and recovery through essential amino acids recognised in nutrition guidelines.

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

Mutant Mass Extreme is backed by Mutant, a brand that presents a detailed ingredient profile and a formulation designed for high-energy support. This brand stands out for its clear disclosure of components and its use of whole food sources such as rolled oats, barley and sweet potato in the blend, which aligns with our preference for transparent manufacturing choices. Our medical team evaluates brands like Mutant to ensure they meet Welzo's stringent standards for safety and quality, and this evaluation is supported by our commitment to rigorous testing and certifications through our supplement quality standards. We favour brands that provide a robust protein and calorie matrix alongside digestion support, which Mutant Mass Extreme delivers through its multi-phase whey blend and enzyme aids. This brand fits well within our portfolio due to its clear formulation focus and alignment with the needs of active individuals seeking calorie-dense, protein-rich supplementation. For ongoing assurance, our medical team and quality controls continually review partnerships: our medical team and our supplement quality standards.