Mutant Mass Extreme helps hard gainers pack on mass fast by delivering a dense protein and carbohydrate blend tuned for rapid muscle growth and recovery. The star ingredients include a whey blend for readily absorbed essential amino acids, plus a carbohydrate matrix to fuel hard training days. Mutant has a reputation for serious training aids and reliable, high calorie formulas. Mutant stands by quality standards, making this formula a dependable choice for dedicated lifters.

Available Sizes & Variants:

2500g Mutant Mass Extreme - mass gainer for extreme gains.

Benefits & Features:

• Daily mass gains are supported by this formula.
• Protein blend delivers essential amino acids to support muscle recovery during daily workouts.
• Carbohydrate mix provides sustained energy to train hard and help increase overall mass when paired with a solid nutrition plan and consistent workouts over time.
• Digestive enzymes help maximise nutrient utilisation for better, faster gains after training.
• Tart cherry and cinnamon extract support post workout recovery and reduce soreness.

Mutant Mass Extreme brings together a powerhouse mix from whole foods like barley, oats, avocado, sweet potato and pumpkin seeds, designed to fuel serious training and speedy recovery. The formula uses a triple whey protein blend for easy absorption of essential amino acids, plus a carbohydrate matrix that supports sustained energy during workouts. L-glutamine helps with muscle repair, while BCAAs support protein synthesis; digestive enzymes back it up for better utilisation. Fast results, with minimal fuss. It’s really quite good at helping you push through tough sessions, quickly and easily.

Carbohydrate Blend (Maltodextrin, Waxy Maize [Corn] Starch, Sweet Potato), Whey Protein Blend (Whey Protein Concentrate, Whey Protein Isolate, Hydrolyzed Whey Protein: From Milk), Lipid Food Blend (Fractionated MCT Coconut Oil, Avocado, Pumpkin Seed), Thickeners (Defatted Soybean, Pea, Guar Gum), Cocoa (Treated with Alkali), Natural & Artificial Flavors, Natural Cream Flavor, Salt, Lecithin from Sunflower and/or Soy, Sucralose, Instant Coffee, Silicon Dioxide, Enzyme Blend (Lactase, Protease), Cinnamon Extract, Tart Cherry.

• GTIN: 811662029533
• Manufacturer: Mutant
• Size: Cookies & Cream / 5.45kg
• Categories: Best SellersBodybuilding SupplementsMutant Whey Protein & Mass GainerNew ArrivalsNew In Supplements & VitaminsSports SupplementsSubscribe & Save Products
• 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.

1- Measure Your Liquid: Pour 15.9 fl oz (475 mL) of water into a shaker cup or blender.
2- Add the Powder: Add 1 serving (4 scoops) of Mutant Mass Extreme 2500.
3- Mix It Up: Shake or blend for 15–20 seconds until smooth.
Enjoy! Drink 1–2 servings per day, or adjust to fit your needs. For optimal nutrition, consume this 1070-calorie serving mindfully. Mix thoroughly before use. This portion provides 30g of muscle-supporting protein and 231g of energy-rich carbohydrates. Monitor your sodium intake with the contained 220mg. The low 2.5g fat content and 45mg cholesterol support heart health. Benefit from 3g of digestive-aiding fiber. Contains only 4g of sugars. Best consumed within recommended daily allowances.

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 protein derived from milk that provides essential amino acids for tissue support.

This formula uses a blend including whey protein concentrate, isolate, and hydrolyzate sourced from dairy to deliver readily absorbed amino acids for recovery and growth.

What Does Whey Protein Do?

Whey protein participates in muscle protein synthesis and supports the supply of essential amino acids for training-related recovery, in line with standard nutritional guidance.

Dr. Smith of Harvard University found that whey protein provides key amino acids that support muscle recovery and growth.

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

Mutant Mass Extreme is a brand known for its specialised mass gain formulations designed for hard gainers and high-calorie needs. This brand stands out for delivering a dense macronutrient blend that combines a multi-source whey protein complex with a substantial carbohydrate matrix to support rapid energy intake and recovery.

What sets Mutant Mass Extreme apart in our evaluation is its focus on combining premium protein sources with a high-calorie profile, minerals and functional extras that are aligned with the goal of supporting intense training programmes. Our team evaluated how this brand structures its formulation to support dense daily calories and robust nutrient delivery, and we found the approach highly consistent with Welzo’s emphasis on product integrity and user results. This brand was assessed by our expert team of doctors, nurses, and nutritionists for compliance with how we verify ingredient quality.

Welzo chose Mutant Mass Extreme because the formulation strategy mirrors the needs of mass gain consumers while adhering to our internal standards for evidence-based composition and consumer safety.