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USN Muscle Fuel Anabolic is one of the most recognised and trusted all-in-one mass gain formulas on the market, engineered for athletes who are serious about size, strength, performance, and recovery. This isn’t a lightweight shake or a casual meal replacement — it’s a full-scale muscle-building catalyst designed for individuals who train hard, recover deeply, and want noticeable progress in strength and lean mass.

Unlike traditional gainers that rely heavily on excessive sugars and filler carbs, Muscle Fuel Anabolic follows a performance-driven formula built around premium proteins, a high-quality carbohydrate matrix, creatine, beta-alanine, HMB, glycine, taurine, BCAAs, glutamine, essential vitamins, key minerals, digestive enzymes, and recovery-supporting actives. Each 150g serving delivers a huge 55g of protein, 77g of carbohydrates, and a powerful combination of anabolic ingredients to maximise recovery, support hypertrophy, and fuel demanding training sessions.

The Protein Matrix blends whey concentrate, milk protein, casein, egg albumin, and soy isolate — providing fast, medium, and slow-digesting proteins that support muscle growth throughout the day. This ensures your body receives a sustained release of amino acids to aid recovery, repair tissue damage, and support lean mass development.

The Carbohydrate Matrix (maltodextrin, dextrose, fructose) helps replenish glycogen rapidly after tough sessions, giving your muscles the fuel they need to grow. The carbs also help shuttle creatine and amino acids into muscle cells more efficiently — a key part of how this formula triggers an anabolic response.

A major selling point of Muscle Fuel Anabolic is its Creatine and Beta-Alanine combination. Creatine boosts ATP regeneration for explosive strength and power, while beta-alanine helps buffer lactic acid, letting you train harder for longer. The inclusion of HMB adds further support for muscle preservation and lean mass growth by reducing muscle breakdown during intense sessions.

USN also loaded this formula with BCAAs, glutamine, glycine, and taurine, essential aminos that support muscle protein synthesis, reduce soreness, improve cell hydration, and boost recovery rates. This makes every workout feel more productive while accelerating the rebuilding process afterward.

Another stand-out element is the Vitamin & Mineral Complex, including vitamins A, B-complex, C, D, E, biotin, folic acid, magnesium, calcium, potassium, and phosphorus — all crucial for health, performance, metabolism, recovery, energy, and hormonal balance. These added micronutrients ensure your body is not just fuelled but optimised.

USN also includes Tolerase L (digestive lactase enzyme) to improve digestion of dairy-based proteins, reducing discomfort and increasing nutrient availability.

Muscle Fuel Anabolic is designed exclusively for lifters, strength athletes, hard gainers, and anyone following a mass-gaining plan. It is not a weight-loss product and not intended for casual users or those under 18.

What you get is a complete mass-building system in one scoop — high protein, performance carbs, creatine, anabolic support, recovery agents, vitamins, minerals, and digestive enzymes. No guesswork. No stacking required. Just one product that does it all.

This is for athletes who want big results, big calories, and big progress — delivered reliably, efficiently, and consistently.

FAQ

Who is Muscle Fuel Anabolic for?
Bodybuilders, strength athletes, and hard gainers wanting muscle mass and performance improvements.

Is this suitable for anyone under 18?
No — it is strictly for adults only.

Can it be used for weight loss?
No. This is a mass-gaining product.

Does it contain creatine?
Yes — 5g per serving.

Is it okay for everyday use?
Yes, if you are following a mass-gaining diet and training consistently.

Does it replace meals?
It can be used as a high-calorie meal replacement or post-workout shake.

DY Nutrition Metabolic Mass 6kg is a heavyweight mass gainer engineered by one of bodybuilding’s greatest minds, Dorian Yates. Built from decades of real-world training, nutrition, and supplement experience, Metabolic Mass is a high-calorie, high-performance formula designed for athletes who struggle to gain size, strength, and quality lean mass.

The problem most hard gainers face isn’t motivation—it’s calories, digestion, and protein turnover. To build more muscle, your body needs an efficient supply of carbohydrates, quality proteins, fats, amino acids, vitamins, and minerals. Metabolic Mass combines all of these into one complete, powerful mass-gaining system that fuels hard training and supports rapid recovery.

Each serving delivers a massive 42g of high-quality protein from multiple sources including whey protein concentrate, milk protein concentrate, caseinate, and hydrolysed beef protein isolate. This diverse blend ensures fast, medium, and slow digestion rates—keeping your muscles fed all day while supporting protein synthesis and reducing breakdown.

To support intense training and fast glycogen replenishment, Metabolic Mass provides 99g of carbohydrates per servingfrom clean, effective sources such as dextrose and maltodextrin. This quick-release carb matrix spikes energy, boosts recovery, and drives amino acids directly into muscle cells when your body needs it most.

Dorian Yates didn’t stop at macros. His Metabolic Mass formula includes a full amino acid complex, featuring AAKG, glutamine, leucine, isoleucine, valine, lysine, citrulline malate, methionine and more—making it a complete muscle-building catalyst. These amino acids support growth, improve recovery speed, enhance blood flow, reduce training fatigue, and feed your muscles during high-volume sessions.

You also get Creatine Monohydrate to fuel performance, increase strength, and support bigger, more powerful lifts—an essential component for anyone chasing serious gains.

DY Nutrition also reinforced the formula with a broad vitamin and mineral complex, ensuring your body has everything it needs for optimal metabolism, immunity, and cellular function. B vitamins support energy production, mental focus, and healthy metabolism—helping you push harder in training and recover more efficiently after it.

The addition of Magnesium helps transform food into energy, promotes better muscle function, prevents cramps, and supports protein creation. Herbal extracts such as green tea, ginseng, tribulus and green coffee provide natural energy, antioxidant protection, metabolic support, and hormonal balance.

Medium-chain triglycerides (MCTs) contribute clean energy, enhanced nutrient absorption, and improved endurance without slowing digestion. CLA supports healthy weight management and improved body composition.

This is not your average mass gainer—it’s a full nutritional system built by a six-time Mr Olympia winner. Whether you struggle to eat enough calories, burn through food too fast, or want a meal replacement that actually supports muscle growth, Metabolic Mass is engineered to help you push beyond plateaus and build dense, powerful size.

DY Nutrition’s Metabolic Mass is ideal for athletes, bodybuilders, or anyone wanting to increase daily caloric intake, improve recovery, and pack on lean mass without excess fat. Every scoop is built on the foundation of 40+ years of bodybuilding knowledge, ensuring one of the most complete and effective gainers ever created.

If you want real size, real strength, and real results—this is the mass gainer built for champions.

2. FAQ

Is this suitable as a meal replacement?
Yes — it contains protein, carbs, fats, vitamins, minerals, amino acids, and creatine.

Does it contain dairy?
Yes — whey, milk protein, and casein are included.

Can beginners use this?
Absolutely — it’s perfect for anyone who struggles to gain weight.

When should I take it?
Post-workout, between meals, or anytime you need high calories.

Since 2005, Mutant Mass has been the trusted choice for dedicated strength athletes, bodybuilders, and hardcore lifters across the globe. Designed for those who want to pack on serious mass, Mutant Mass delivers a potent, nutrient-dense formula that fuels massive muscle growth, speeds recovery, and supports relentless training.

Why Choose Mutant Mass?

Mutant Mass combines decades of research with feedback from some of the most massive MUTANT athletes on the planet. Unlike ordinary mass gainers packed with sugars and fillers, Mutant Mass features clean, food-based ingredients including complex carbs, a comprehensive protein matrix, and healthy fats — all designed to optimize muscle gain and recovery.

Calorie & Protein Powerhouse

Each 280g serving delivers an impressive 1100 calories alongside 56g of protein, providing the fuel your body needs to build muscle, replenish glycogen, and recover quickly from intense workouts. This large calorie load is ideal for hard gainers or athletes with high energy demands.

Advanced Protein Matrix

The advanced Pro-Matrix blend includes:

• Whey Protein Concentrate, Hydrolyzed Whey Protein, and Whey Protein Isolate for fast absorption.

• Micellar Casein Protein for slow-release amino acids.

• Milk Protein Concentrate and Isolate for balanced, sustained protein delivery.

This blend ensures muscle protein synthesis is maximized throughout the day and night.

Complex Carbs for Sustained Energy

The Carbo Blend features waxy maize starch, maltodextrin, barley starch, sweet potato, and rolled oats — a powerful mix for rapid glycogen restoration and steady energy release to fuel prolonged training sessions.

Healthy Fats & Functional Ingredients

The Lipid Foods Blend includes fractionated coconut oil (MCT), avocado, flaxseed, pumpkin seed, and sunflower oil — all essential for hormone support and overall health. Added digestive enzymes like lactase and protease help optimize nutrient absorption, while cinnamon extract and tart cherry offer antioxidant and recovery benefits.

Usage Instructions

Mix 4 scoops (280g) with water, milk, or your favourite beverage. Depending on your caloric needs, consume 1-3 servings daily as part of your muscle-building regimen.

Since 2005, Mutant Mass has been the go-to mass gainer for dedicated strength athletes, bodybuilders, and hardcore lifters worldwide. Built for those who don’t just want gains but massive, monstrous size, Mutant Mass delivers a scientifically crafted, nutrient-dense formula designed to fuel relentless muscle growth, boost recovery, and power you through your most intense training sessions.

Why Mutant Mass is the Original & Still the Best

Mutant Mass isn’t just another weight gainer — it’s a legacy of quality, performance, and results. Serving millions globally across 100+ countries, Mutant Mass continues to evolve with cutting-edge research and feedback from some of the most massive MUTANT athletes on the planet. It combines clean, food-based ingredients with powerful blends of carbs, proteins, and healthy fats to give you a superior muscle-building advantage.

Unlike generic mass gainers loaded with sugars and cheap fillers, Mutant Mass features a nutrient-rich carbohydrate complex, a comprehensive protein matrix, and healthy lipid blends that work synergistically to optimize every aspect of muscle growth and recovery.

Massive Caloric Support for Extreme Muscle Growth

One of the biggest challenges for those looking to gain serious mass is getting enough calories — and not just any calories, but nutrient-dense, quality calories that support muscle repair and growth without excessive fat gain.

Each massive 280g serving of Mutant Mass packs a colossal 1100 calories to power your body with everything it needs to grow. This is ideal for hard gainers and athletes with high metabolic demands who struggle to consume enough food to support their training goals.

Superior Protein Matrix for Muscle Repair & Growth

Muscle growth relies heavily on quality protein to stimulate muscle protein synthesis and repair damage caused during intense training. Mutant Mass delivers an advanced Pro-Matrix protein blend featuring multiple protein sources:

• Whey Protein Concentrate, Hydrolyzed Whey Protein, and Whey Protein Isolate: Rapidly digestible proteins that flood muscles with amino acids for immediate recovery.

• Micellar Casein Protein: A slow-digesting protein that provides a sustained release of amino acids, supporting muscle repair during rest.

• Milk Protein Concentrate and Isolate: Offering a balanced protein profile to support long-term muscle health.

This blend ensures a steady stream of essential amino acids to maximize recovery, reduce muscle breakdown, and support continuous muscle growth.

Complex Carbohydrate Blend for Sustained Energy

The Carbo Blend in Mutant Mass includes carefully selected sources like waxy maize starch, maltodextrin, barley starch, sweet potato, and rolled oats. This mix provides:

• Fast-acting carbs to quickly replenish glycogen stores post-workout.

• Slower digesting carbs to provide steady energy throughout the day.

• Essential nutrients and dietary fibre to support digestive health.

This complex carb profile keeps your energy levels high and sustained, helping you train longer and recover faster.

Healthy Fats for Hormonal Support & Energy

Healthy fats are critical for hormone production and overall health. Mutant Mass includes a Lipid Foods Blend with fractionated coconut (MCT) oil, avocado, flaxseed, pumpkin seed, and sunflower oil. These fats provide:

• Quick energy sources for training and recovery.

• Omega fatty acids that support joint health and inflammation control.

• Nutrients essential for maintaining optimal testosterone levels.

Functional Ingredients for Digestive Health and Recovery

Mutant Mass also contains digestive enzymes like lactase and protease, which enhance nutrient absorption and reduce bloating. Cinnamon extract (Cinnulin PF®) and tart cherry add antioxidant and anti-inflammatory benefits, aiding recovery and reducing muscle soreness.

How to Use Mutant Mass

Mix 4 scoops (280g) with water, milk, or your favourite beverage and consume 1-3 times daily depending on your caloric needs. For best results, incorporate into a balanced diet and regular training routine.

Who Should Use Mutant Mass?

Ideal for hard gainers, bodybuilders, and athletes aiming for extreme muscle and weight gain without compromising on quality nutrition. If you want serious size, strength, and recovery support, Mutant Mass is your ultimate solution.