Best Weight Gainer 2026

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Last Updated - 27.03.2026

Best Choice

01

Optimum Nutrition

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45kg, packaging may vary

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

To prepare the Weight Gainer, mix 2 measuring spoons with 710 ml of water or plant milk, add fruit or nut butter for a tasty and high-calorie protein smoothie after exercise or between meals
Source EFSA Journal * 2010;8(10):1811; 2011;9(6):2203; ** 2011;9(7):2303; *** 2011; 9(7):2305
Serious Mass protein powder is available in 6 flavours (banana, chocolate peanut butter, chocolate, cookies and cream, strawberry and vanilla) and contains sweetener
Protein powder formula without added sugar with 25 vitamins and minerals and less than 5 g of fat per serving, plus over 250 g of carbonic hydrates to support muscle regeneration***
Low-fat Mass Gainer with over 1250 calories and 50 g protein per serving to support muscle growth plus* 3 g creatine monohydrate to support performance**

59,99 €
02

Optimum Nutrition

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45kg, packaging may vary

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

To prepare the Weight Gainer, mix 2 measuring spoons with 710 ml of water or plant milk, add fruit or nut butter for a tasty and high-calorie protein smoothie after exercise or between meals
Source EFSA Journal * 2010;8(10):1811; 2011;9(6):2203; ** 2011;9(7):2303; *** 2011; 9(7):2305
Serious Mass protein powder is available in 6 flavours (banana, chocolate peanut butter, chocolate, cookies and cream, strawberry and vanilla) and contains sweetener
Protein powder formula without added sugar with 25 vitamins and minerals and less than 5 g of fat per serving, plus over 250 g of carbonic hydrates to support muscle regeneration***
Low-fat Mass Gainer with over 1250 calories and 50 g protein per serving to support muscle growth plus* 3 g creatine monohydrate to support performance**

56,99 €
03

Mammut

Mammut Nutrition Crash Weight Gainer Powder Vanilla - 4.5 kg - 518 kcal/shake for weight gain - 80% carbohydrates - 4-component protein - Ideal for endurance and performance athletes

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12% Off
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ideal for endurance and professional athletes.
High carbohydrate content with 80% carbohydrates (vanilla).
Contribution to weight gain.
3-component carbohydrate complex and 4-component protein complex.
1410 kcal per 3 shakes.

46,72 € 52,99 €(12% Off off)
04

Mammut

Mammut Nutrition Crash Weight Gainer Powder Vanilla - 4.5 kg - 518 kcal/shake for weight gain - 80% carbohydrates - 4-component protein - Ideal for endurance and performance athletes

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16% Off
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ideal for endurance and professional athletes.
High carbohydrate content with 80% carbohydrates (vanilla).
Contribution to weight gain.
3-component carbohydrate complex and 4-component protein complex.
1410 kcal per 3 shakes.

44,38 € 52,99 €(16% Off off)
Value for Money

05

Mammut

Mammut Nutrition Crash Weight Gainer Powder Chocolate - 4.5 kg - 518 kcal/Shake for Weight Gain - 80% Carbohydrates - 4-Component Protein - Ideal for Endurance and Performance Athletes

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19% Off
9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ideal for endurance and professional athletes.
High carbohydrate content with 80% carbohydrates (vanilla).
Contribution to weight gain.
3-component carbohydrate complex and 4-component protein complex.
1410 kcal per 3 shakes.

42,99 € 52,99 €(19% Off off)
06

Mammut

Mammut Nutrition Crash Weight Gainer Powder Chocolate - 4.5 kg - 518 kcal/Shake for Weight Gain - 80% Carbohydrates - 4-Component Protein - Ideal for Endurance and Performance Athletes

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23% Off
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ideal for endurance and professional athletes.
High carbohydrate content with 80% carbohydrates (vanilla).
Contribution to weight gain.
3-component carbohydrate complex and 4-component protein complex.
1410 kcal per 3 shakes.

40,84 € 52,99 €(23% Off off)
07

Optimum Nutrition

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73kg, packaging may vary

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22% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Supplied as instant powder. Simply mix with water for a delicious and calorie-rich post-workout drink or take it between meals to promote muscle growth.
Provides calories: promotes muscle mass increase and replenishes the body's glycogen stores.
Packaging can vary – updated look, same trusted quality.
No added sugar: Contains 24 vitamins and minerals per serving.
Muscle-building preparation with 1,250 calories and 50 g of protein per serving and less than 5 g of fat.
Great value for money: Serious Mass protein powder has a high calorie content and contains high-quality protein.

38,99 € 49,99 €(22% Off off)
08

OLIMP SPORT NUTRITION

Olimp Labs Gain Bolic 6000 Pouch, Vanilla Flavour, 1 kg

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17% Off
8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Helps to create good conditions for building muscle mass thanks to protein
Designed to supplement the daily diet with high-quality proteins and carbohydrates, amino acids (including BCAA), creatine and taurine
An excellent addition to a balanced diet of professional and physically active amateur athletes is
A simple and convenient method is to provide healthy and full-fledged calories

11,29 € 13,59 €(17% Off off)
09

OLIMP SPORT NUTRITION

Olimp Labs Gain Bolic 6000 Pouch, Vanilla Flavour, 1 kg

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21% Off
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Helps to create good conditions for building muscle mass thanks to protein
Designed to supplement the daily diet with high-quality proteins and carbohydrates, amino acids (including BCAA), creatine and taurine
An excellent addition to a balanced diet of professional and physically active amateur athletes is
A simple and convenient method is to provide healthy and full-fledged calories

10,73 € 13,59 €(21% Off off)
10

GEN GERMAN ELITE NUTRITION

Clean Weight Gainer - 3 kg - With Complex Carbohydrates & Protein - Ideal for the Mass Phase - Powder for Mass Building and Gaining - Vegetarian - Chocolate Flavour

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With extra glutamine, bromelaine and lactase: our gainer has been specifically optimised, with an additional 5 g L-glutamine, which corresponds to a total amount of 17,478 mg glutamine per serving. The formula is complemented by 563 F.I.P. Bromelain and 6,750 FFC lactase units per serving. The combination of bioactive enzymes and high-quality protein makes this shake a thoughtful addition to your diet, more than just a classic mass shake.
With complex carbon ydrates: many mass gainers contain large amounts of sugar and inferior fillers, the Clean Mass Gainer relies on quality. With high-quality proteins, complex carbohydrates from oats and rice flour as well as enzymes, this shake offers an ideal foundation. Each serving provides 561 kcal, including 86 g of high-quality carbohydrates with only 4 g sugar, 37 g protein and only 6 g of fat."
High protein: our gainer relies on ultra-filtered whey protein concentrate from German pasture farming. With 37 g of high-quality protein per shake, it offers a first-class source of protein.
From athletes for athletes: since 2016, German Elite Nutrition has been producing high-quality dietary supplements in German brand quality. Our products are made from selected raw materials to strict quality standards, developed with a focus on reliability and purity.
Delicious taste: 6 delicious varieties with pleasant sweetness, without aspartame or questionable additives.

44,99 €