Mass & Weight Gainers

What Are Weight Gainers and What Are They For?

Weight gainers, also known as mass gainers, are high-calorie dietary supplement powders formulated with a blend of proteins, carbohydrates and fats. They are designed primarily for hard gainers and ectomorphs — people who struggle to put on weight — and for anyone who needs a significant caloric surplus to support a muscle-building phase.

What types of mass gainer are there?

Not all gainers are the same. Depending on their composition, the main categories are:

  • Classic Mass Gainer: very high in carbohydrates (up to 250–300 g per serving) and protein. Best suited for those with a very fast metabolism who need large amounts of calories.
  • Lean Gainer: a more balanced formula with fewer simple carbs and higher protein content. Ideal for those who want to gain muscle while minimising fat accumulation.
  • Vegan Gainer: made with plant-based proteins (pea, rice, soy) for those following a plant-based diet.

The right choice depends on your metabolism, goals and daily diet.

When and how should you take a weight gainer?

The best time to take a mass gainer depends on your schedule and daily calorie needs:

  • Post-workout: straight after training to support recovery and muscle growth.
  • As an extra meal: between meals or before bed to hit your daily calorie target.
  • Pre-workout: to fuel your training session with readily available energy.

Mix the powder in water or milk following the label instructions. Food supplements are not intended as substitutes for a varied and balanced diet or a healthy lifestyle.

Choose Your Weight Gainer at Citymuscle

At Citymuscle you'll find a curated selection of weight gainers and mass gainers from top brands, perfect for anyone looking to increase body weight and muscle mass effectively. Pair them with our other food supplements — such as whey protein, creatine and amino acids — or complete your kit with our technical sportswear, designed to support every training session.

Applied Nutrition Critical Mass 6000 gr
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Mass & Weight Gainers
Critical Mass 6000 gr
Applied Nutrition
PB-CriticalMass6000gr
€52.62 €58.47
Critical Mass is a mixture all in one of proteins, carbohydrates and other functional substances for athletes and active people. Thanks to its protein content, it promotes the growth and maintenance of muscle mass. Carbohydrates deal with energy supply before and after training.
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Applied Nutrition Critical Mass Professional 2400 gr
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Critical Mass Professional 2400 gr
Applied Nutrition
PB-CriticalMassProfessional2400gr
€41.77 €46.41
Critical Mass Professional of Applied Nutrition is a high quality gainer designed to help you achieve your objectives for increasing muscle mass and weight.
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Mutant Mass 6.8 kg: Mass Gainer with Protein and Carbs Mutant Mass 6.8 kg: Mass Gainer with Protein and Carbs 2
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Mutant Mass 6,8 Kg
Mutant
PB-MutantMass68
€74.43 €82.70
mutant mass among the most innovative protein and carbohydrate supplements produced by the Mutant line, a formidable gainer
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Mutant Mass 2.2 kg: Mass Gainer with Protein and Carbs Mutant Mass 2.2 kg: Mass Gainer with Protein and Carbs 2
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Mutant Mass 2,2 Kg
Mutant
PB-MutantMass22
€28.96 €32.18
MUTAN MAN Post-workout supplement assessed as one of the best gainers in the world, thanks to its mixture of carbohydrates and proteins promotes muscle growth
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Dorian Yates Metabolic Mass Gainer 6000 gr Dorian Yates Metabolic Mass Gainer 6000 gr 2
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Metabolic Mass Gainer 6000 gr
Dorian Yates
PB-MetabolicMass6000
€71.07 €78.97
Metabolic Mass Gainer, a powerful combination of high quality milk serum proteins, creatine, vitamins and essential nutrients. Recommended for physically active persons and training athletes of the force
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Mutant Mass Extreme 2500 2720 gr Mutant Mass Extreme 2500 2720 gr 2
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Mutant Mass Extreme 2500 2720 gr
Mutant
PB-MutantMassExtreme25002720
€30.83 €34.25
Mutant Mass Extreme 2500 is a post -training mass gainer, high content in rapid carbohydrates and proteins, enriched with amino acids, excellent after exhausting sessions with weights.
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Mutant Mass Extreme 2500 5450 gr Mutant Mass Extreme 2500 5450 gr 2
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Mutant Mass Extreme 2500 5450 gr
Mutant
PB-MutantMassExtreme25005450
€67.14 €74.60
Mutant Mass Extreme 2500 is a post -training mass gainer, high content in rapid carbohydrates and proteins, enriched with amino acids, excellent after exhausting sessions with weights.
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Mega Mass 4000 Weider 3 kg: Gainer with Creapure Mega Mass 4000 Weider 3 kg: Gainer with Creapure 2
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Mega Mass 4000 3000 grams
Weider
PB-86408
€66.90 €74.34
A high-calorie mass gainer designed to support bulking, recovery and energy intake: 69% carbs, 20% protein and 3.4 g of Creapure® creatine per serving. Easy to mix and ideal after training or whenever you need a more complete shake.
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Beef Mass Gainer 3130 grams Beef Mass Gainer 3130 grams 2
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Mass & Weight Gainers
Beef Mass Gainer 3130 grams
Applied Nutrition
PB-367679
€57.04 €63.38
Beef Mass Gainer by Applied Nutrition is a protein supplement ideal for supporting muscle mass growth, featuring innovative hydrolysed beef protein.
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Applied Nutrition Critical Mass Professional 6000 gr Applied Nutrition Critical Mass Professional 6000 gr 2
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Critical Mass Professional 6000 gr
Applied Nutrition
PB-CriticalMassProfessional6000gr
€83.34 €92.60
Critical Mass Professional of Applied Nutrition is a high quality gainer designed to help you achieve your objectives for increasing muscle mass and weight.
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Mutant Mass Extreme 2500 9070 gr Mutant Mass Extreme 2500 9070 gr 2
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Mutant Mass Extreme 2500 9070 gr
Mutant
PB-MutantMassExtreme25009070
€106.46 €118.29
Mutant Mass Extreme 2500 is a post -training mass gainer, high content in rapid carbohydrates and proteins, enriched with amino acids, excellent after exhausting sessions with weights.
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Mega Mass 4000 Weider 7 kg: Gainer with Creapure Mega Mass 4000 Weider 7 kg: Gainer with Creapure 2
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Mega Mass 4000 7000 grams
Weider
PB-125373
€137.55 €152.83
A complete mass gainer to support muscle size and weight gain, with 49 g protein per serving, 3.4 g Creapure® creatine and a high-calorie carbohydrate blend. Ideal for bulking and post-workout recovery.
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Weight gainer 1.5 kg Weider | 67% carbs
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Mega Mass 2000 1500 grams
Weider
PB-117488
€36.27 €40.30
Weight gainer 1.5 kg with complex carbohydrates and protein from whey, pea and egg white. A practical shake for increasing daily calorie intake during a bulking phase. Mix one 90 g serving with 300 ml of water or milk. Order online for fast delivery.
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Complex carbohydrate powder 5% Nutrition Complex carbohydrate powder 5% Nutrition 2
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Mass & Weight Gainers
Real Carbs Rice Legendary Series 1580 grams
5% Nutrition
PB-RICE-P42667
€43.67 €48.52
Complex carbohydrate powder made with rice bran and oats for convenient daily carb intake around training. Each serving provides 21 g of carbohydrates, 7 g of fibre and 2 g of sugar. The 1.58 kg tub is easy to use and available in several flavours.
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Mass gainer protein carbs 3000 g ALLNUTRITION Mass gainer protein carbs 3000 g ALLNUTRITION 2
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Mass & Weight Gainers
Mass Acceleration 3000 grams
Allnutrition
PB-115408
€38.00 €42.22
Mass gainer protein carbs in a 3000 g tub for adding carbohydrates and protein to your daily diet. Each 70 g serving provides 49 g of carbohydrates and 14 g of protein from hydrolysed corn starch, dextrose and whey protein concentrate. Mix with water or milk before or after training.
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R1 Clean Gainer 4320 grams R1 Clean Gainer 4320 grams 2
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R1 Clean Gainer 4380 grams
Rule One
PB-109067
€108.06 €120.07
Boost lean muscle with a balanced mass gainer packed with high-quality proteins and clean carbs.
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Mass Gainer - Rule One Proteins | Mass Gain Supplement Mass Gainer - Rule One Proteins | Mass Gain Supplement 2
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Mass Gainer 2620 grams
Rule One
PB-114108
€55.46 €61.62
Mass Gainer by Rule One Proteins is a powdered supplement designed to support increased caloric and protein intake, intended for use alongside training and a targeted diet.
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Mass-Tech Elite 3180 g MuscleTech Weight Gainer Mass-Tech Elite 3180 g MuscleTech Weight Gainer 2
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Mass-Tech Elite 3180 gr
Muscletech
PB-MassTechElite3180
€59.95 €66.62
advanced formula for the increase in muscle mass, ideal for bodybuilding.
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Nortech Nutrition Lean Mass Gainer 4000 gr
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Lean Mass Gainer 4000 gr
Nortech Nutrition
€69.87 €87.34
Ricco di nutrienti essenziali, è progettato per alimentare la crescita muscolare e amplificare la forza
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Mhp Up Your Mass XXXL 1350 2780 gr Mhp Up Your Mass XXXL 1350 2780 gr 2
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Up Your Mass XXXL 1350 2780 gr
Mhp
PB-UpYourMassXXXL1350
€62.73 €69.70
Up Your Mass XXXL 1350 is a post -workout of proteins, carbohydrates, amino acids and fatty acids, to optimize recovery and growth for hyperORFIA
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Carnivor Mass 6 lb Carnivor Mass 6 lb 2
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Carnivor Mass 2744 gr
MuscleMeds
PB-CarnivorMass2744
€73.12 €81.25
Gainer assisted the anabolic processes useful for the growth of muscle mass
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MuscleTech Mass-Tech Extreme 2000 muscle mass gainer MuscleTech Mass-Tech Extreme 2000 muscle mass gainer 2
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Mass-Tech Extreme 2000 2720 gr
Muscletech
PB-MassTechExtreme20002720gr
€54.78 €60.86
Advanced high-calorie, high-protein gainer for rapid muscle mass and strength increase.
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