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.

Build Serious Size. Pack on Lean Mass. Perform at Your Peak.

Applied Nutrition Critical Mass Professional is the UK’s #1 trusted mass gainer, engineered for athletes and hard gainers looking to achieve serious size and strength without piling on unwanted fat. Designed with a balanced ratio of premium protein, carbohydrates, and essential fats, this powerhouse formula fuels muscle growth, performance, and recovery.

Each serving delivers an incredible 566 calories, 42g of protein, and a powerful matrix of creatine, HMB, glutamine, and MCTs — giving your body everything it needs to repair, grow, and perform at its highest potential.

The protein blend combines Whey Isolate (ISO-XP 95%), Milk Protein Isolate, and Whey Concentrate (WPC 80)— offering both fast and slow-digesting proteins to sustain muscle recovery throughout the day.

Critical Mass Professional also features a reduced-sugar formula, Chromium for nutrient metabolism, and digestive enzymes (DigeZyme®) for smooth digestion even with high-calorie intake.

Why Choose Critical Mass Professional?

42g of high-quality protein per serving
566 calories for lean mass gains
Enhanced with Creatine, Glutamine, and Leucine for performance & recovery
Added CLA and MCT fats to support energy and hormone balance
DigeZyme® & LactoSpore® for gut health and digestion
Informed-Sport Certified – tested for banned substances
Halal Certified Product

Product Highlights

• Reduced sugar, clean mass gainer formula

• Advanced creatine and amino matrix

• 40 servings per 6kg bag

• Great taste and easy mixing

• Ideal for hard gainers, athletes, and those needing high-calorie intake

• Designed to stack with iDrive Insulin Driver for maximum uptake

Who It’s For

• Hard gainers needing calorie surplus

• Athletes seeking recovery & performance enhancement

• Anyone aiming to build lean size without excess sugar

• Ideal for off-season bulking or muscle maintenance

FAQ

Q1: Can Critical Mass be used post-workout?
Yes, it’s an excellent post-workout shake to replenish glycogen and support muscle recovery.

Q2: Is this suitable for beginners?
Absolutely — it’s ideal for anyone struggling to gain mass or increase daily calories.

Q3: Will it cause bloating?
No — the formula includes DigeZyme® enzymes and LactoSpore® probiotics to improve digestion.

Q4: How does it differ from regular Critical Mass?
The Professional version includes added HMB, Leucine, Creatine, and MCTs for superior lean mass and strength gains.

Q5: Is it suitable for vegetarians?
Yes, it contains milk proteins but no meat-derived ingredients.