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Mass Gain

Our Mass Gain selection is designed for those looking to build muscle, increase calorie intake, or optimise training performance.

Formulated for athletes, strength trainers, or individuals with fast metabolisms, it includes suitable products such as gainers, whey, creatine, and amino acids.

A range created to support progress, help you reach your physical goals, and strengthen your daily training routine.

17 products

Save 10% Mass Gain Pack QNT : Metapure Whey Isolate Zero Belgian chocolate 908 g, BCAA 8500 lemon 350 g and black shaker 600 ml
Sale price Starting at 75,99 € Regular price84,45 €
Save 5% QNT Metapure Mass Whey Protéine Isolate Gainer vanilla 1815 g, protein gainer for mass gain powder
Sale price50,54 € Regular price53,20 €
Save 5% QNT 3000 Muscle Mass Gainer vanilla 1.3 kg, protein gainer for mass gain powder
Sale price21,42 € Regular price22,55 €
PROMO QNT Metapure Whey Isolate Zero Belgian chocolate 908 g, whey isolate
Sale price Starting at 47,97 €
Save 25% QNT pure creatine monohydrate powder, 300 g tub, creatine supplement for strength training and performance
Sale price Starting at 15,00 € Regular price20,00 €
Save 15% QNT Creatine monohydrate 3000 mg - 200 Comprimés, creatine monohydrate in tablets
Sale price16,11 € Regular price18,95 €
Save 10% QNT 40% Barre Protéinée Crunchy chocolate 65 g, protein bar
Sale price32,40 € Regular price36,00 €
Save 20% QNT BCAA 8500 lemon flavour, 350 g, branched-chain amino acids powder for training
Sale price23,92 € Regular price29,90 €
Save 15% QNT Pre-workout Overdrive lemonade 390 g, pre-workout powder
Sale price25,50 € Regular price30,00 €
Sold outSave 3% QNT Prime Whey Belgian chocolate brownie 908 g, whey protein
Sale price Starting at 36,96 € Regular price38,10 €
Save 25% QNT L-Glutamine 6000 mg 350 g, L-glutamine powder
Sale price16,50 € Regular price22,00 €
Save 10% QNT Amino Acid 3000 mg 100% BŒUF, amino acids in tablets
Sale price25,20 € Regular price28,00 €
Save 10% QNT 40% Barre Protéinée Crunchy chocolate 65 g, protein bar
Sale price32,40 € Regular price36,00 €
Save 3% QNT Delicious Whey Belgian chocolate 908 g, whey protein
Sale price Starting at 36,96 € Regular price38,10 €
Save 20% QNT HMB 1000 mg, HMB in capsules
Sale price17,20 € Regular price21,50 €
Save 20% QNT AAKG, AAKG arginine alpha-ketoglutarate in tablets
Sale price17,04 € Regular price21,30 €
Save 5% QNT Amino Load red fruits 500 ml, amino acids
Sale price34,20 € Regular price36,00 €
Save 5% QNT Clear Whey Zero Carb Eau Protéinée 500 ml, whey isolate
Sale price34,20 € Regular price36,00 €
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Build serious muscle mass with QNT

What exactly is a muscle-building (mass gain) phase?

A muscle-building phase is when you are chasing real muscle and size, not just a higher number on the scale. The principle is simple: to build muscle, your body needs two things, a calorie surplus (eating more than you burn) and consistent strength training that gives your body a reason to grow.

It all starts with food. Your diet supplies the energy and the building blocks. Supplements never replace meals: they fill the gaps, simplify the logistics, and help you hit your targets when eating enough becomes a struggle.

This collection brings together everything you need to structure an effective mass-gain phase:

  • mass gainers for calories and carbohydrates
  • whey and isolate for protein
  • creatine for strength and size
  • amino acids (BCAAs, glutamine, HMB) for support

The goal: gaining muscle cleanly and steadily, without turning yourself into a fat-storage machine.

The calorie surplus: the foundation of any mass-gain phase

No calorie surplus, no muscle gain, it really is that simple. Your body needs more energy than it burns in order to build new tissue. For most lifters, the reference range usually sits around 300 to 500 extra calories per day: enough to make progress, not so much that you pile on fat.

The catch is that swallowing that surplus through solid meals alone can be tough, especially when your appetite does not cooperate. This is where a mass gainer becomes genuinely handy. A single shake easily delivers several hundred calories as carbohydrates and protein, alongside your meals rather than in place of them.

A few useful markers:

  • aim for steady progress on the scale, not a sudden jump
  • prioritise quality calories (protein, good carbs) over empty sugar
  • adjust based on your results over 2 to 3 weeks

A controlled surplus is the difference between gaining muscle and gaining mostly fat.

Mass gainer or whey: which one should you pick to gain weight and build muscle?

This is the most common question, and the answer depends on your profile. A mass gainer is a high-calorie product rich in carbohydrates: its job is to push your calories up easily. Whey is a low-calorie protein: its job is to cover your protein needs so you can repair and build muscle.

So what is the best mass gainer for building muscle? There is no single answer: the best mass gainer is the one that matches your goal. If you want to drive calories hard, go for a gainer that is very high in carbs. If you are after a cleaner gain, a more protein-focused gainer will suit you better.

In practice, a gainer and whey complement each other. Plenty of people pair a gainer for the calories with a whey to keep their protein steady across the day.

In this collection you will find:

  • the 3000 Muscle Mass Gainer, rich in carbs, ideal for pushing calories when you struggle to gain weight
  • the Metapure Mass Whey Protein Isolate Gainer, more focused on protein quality for a cleaner gain
  • whey options such as Prime Whey, Delicious Whey and the Metapure Whey Isolate Zero whey isolate for a pure protein hit

A simple rule of thumb: if you struggle to hit your calories, lean on the gainer. If your calories are already there but you are short on protein, whey is enough. Often, combining the two is the best option.

Does creatine make you gain weight? The truth

This is one of the most asked questions, so let us be clear: creatine does not make you gain fat. The slight weight gain you may notice in the first few weeks (often 0.5 to 1.5 kg) comes from water held inside the muscle, not from fat building up. That intramuscular water actually makes the muscle look fuller and bigger.

Creatine is one of the most studied supplements out there. It helps support short, intense efforts and therefore backs up your strength and performance in training, which feeds directly into your muscle gains over time.

On the practical side:

  • dosage: 3 g of creatine monohydrate per day is the common recommendation, every day, training or rest
  • water: drink plenty across the day, since creatine pulls water into the muscle
  • timing: the hour does not matter much, consistency is what counts

In the collection: Pure Creatine Monohydrate in powder, or the Creatine monohydrate 3000 mg in tablets if you prefer the convenience. Creatine is safe for a healthy person who respects the recommended doses; if you have any medical concerns, ask a healthcare professional for advice.

The winning synergy: gainer + whey + creatine + amino acids

The real strength of a mass-gain phase is not one miracle product, it is a coherent routine where each supplement plays its part. This is exactly what a lot of guides miss when they talk about one product at a time.

Here is how the pieces fit together:

  • the mass gainer brings the calories and carbohydrates for your surplus
  • the whey covers protein to build and repair muscle
  • creatine supports strength so you can train harder
  • amino acids round the whole thing out

On the amino side, this collection offers BCAA 8500, Amino Acid 3000 mg 100% beef and Amino Load in a handy liquid format around training, L-Glutamine 6000 mg often used in recovery, plus HMB 1000 mg and AAKG.

To get started without overthinking it, the Pack Prise De Masse bundles the essentials together. And to bring intensity to your sessions, Pre-workout Overdrive helps you attack your training at full tilt. The idea: a simple system, kept up over time.

Hardgainer: how do you gain weight when it just will not happen?

You eat, you train, and the scale will not budge? You are probably a hardgainer, often an ectomorph body type: fast metabolism, an appetite that fills up quickly, real difficulty creating a surplus. Good news, building muscle is still entirely possible, you just need the right strategy.

The key point for a hardgainer is increasing calories without having to eat mountains of solid food. Liquid calories are your best ally because they go down far more easily.

How to go about it:

  • add one or two gainer shakes per day between meals
  • favour a carb-rich gainer such as the 3000 Muscle Mass Gainer
  • never skip a meal and always keep a snack within reach
  • be patient and consistent, mass gain plays out over weeks

A mass gainer is designed precisely for these profiles: it packs a lot of energy into one shake, which finally makes a daily calorie surplus achievable.

Mass gain for women: gaining weight and building muscle the smart way

Building muscle is not just for men, and no, taking protein or creatine will not make you bulky. Building real muscle mass takes time and a genuine surplus, which mostly gives you a more toned, sculpted body.

Plenty of women want to build muscle or add size in specific areas (glutes, legs) while keeping a balanced figure. The logic stays the same: a slight calorie surplus, enough protein, and resistance training.

Several options in this collection fit this perfectly:

  • a whey such as Prime Whey or Delicious Whey for protein, without excess calories
  • the Iso Whey Zero Carb as a light, refreshing drink
  • Pure Creatine Monohydrate, just as effective for women as for men

If you put on fat easily, it is better to avoid very high-calorie gainers and aim for a moderate surplus through food and whey. The goal is not to eat more of anything and everything, but to eat just enough to feed the muscle.

What to eat and how to organise your day

Supplements only work if your diet backs them up. For a successful mass-gain phase, build your days around meals rich in protein and quality carbohydrates: meat, fish, eggs, legumes, rice, pasta, oats, fruit.

A simple principle to keep in mind: how much protein do you need for muscle gain? The general aim is around 1.6 to 2 g of protein per kilo of bodyweight per day, spread across the whole day. Whey is exactly what helps you reach that total without any hassle.

A typical day might look like this:

  • morning: a protein-rich breakfast, or a shake if your appetite is low
  • around training: creatine daily, with aminos and pre-workout as you need them
  • after the session: whey or gainer to kick-start recovery
  • between meals: a gainer or a 40% Crunchy protein bar to add calories

The real secret is not a product, it is consistency: steady intake, serious training, and patience. That consistency is what turns the effort into muscle.

Frequently Asked Questions

Your health and results are our top priority. This FAQ answers the essential questions about QNT products, so you know exactly what you’re buying and how they support your goals.

3000 Muscle Mass or Metapure Mass: which gainer should I pick?

Pick the 3000 Muscle Mass Gainer if you struggle to hit your calories and want to push carbs hard. Go for the Metapure Mass if you want a cleaner gain that leans more on protein quality with fewer sugars.

How do I build muscle without gaining too much fat?

Keep a moderate surplus, around 300 to 500 kcal a day rather than an aggressive bulk, and prioritise protein and good carbs. Weigh yourself weekly, and if the gain comes too fast, trim your calories slightly.

How long before I see results from a mass-gain phase?

Think in months rather than weeks. The scale moves in the first few weeks, but visible, real muscle usually takes several months of consistent training, a surplus and enough protein. Consistency matters more than speed.

Can I take a gainer and creatine together?

Yes, the two pair very well and you can even stir your creatine dose into your gainer shake. Creatine is taken every day at any time, while the gainer is best used around meals or training.