Best Weight Gainer of 2025
Last updated on 25/09/2025
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1
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45 kg
Optimum Nutrition
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Optimum Nutrition
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 16 Servings, 5.45 kg
12% OffFree Shipping
Why we love it
- Supports muscle growth and performance.
- Promotes muscle recovery after workouts.
- Comes in 6 delicious flavours.
Main Highlights
- Low fat mass gainer with over 1262 CALORIES and 50g of PROTEIN per serving to support muscle growth* plus 3 grams of CREATINE MONOHYDRATE to support performance**
- No added sugar protein powder formula with 25 vitamins and minerals and less than 5g fat per serving, plus over 248 grams of CARBOHYDRATES helping support muscle recovery***
- Serious Mass protein powder comes in 6 flavours (banana, chocolate peanut butter, chocolate, cookies & cream, strawberry and vanilla) & contains sweetener
- To prepare weight gainer mix 2 scoops with 710 ml of water or plant milk, add fruit or nut butters for a tasty and calorific post workout or between meals protein smoothie
- Source EFSA Journal *2010;8(10):1811; 2011;9(6):2203; ** 2011;9(7):2303; ***2011; 9(7):2303
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Value for Money
2
USN Hyperbolic Mass French Vanilla 6kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar
USN
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USN
USN Hyperbolic Mass French Vanilla 6kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar
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Why we love it
- Tastes fantastic, builds muscle.
- High-calorie, easy-mixing formula.
- Packed with nutritious protein.
Main Highlights
- Our best mass gainer yet: Our best-tasting mass gainer is for those who want to increase their muscle mass, but don't want to compromise on the taste of their protein drink.
- High calorie bulk powder: With up to 1183 calories our all-in-one mass and weight gainer is ideal for individuals who struggle to gain muscle mass and want a fast-acting, easy-mixing and effective formula.
- Amazing taste, great results: The improved formula of our delicious vanilla flavour mass gainer provides a greater post-workout effectiveness, with a smoother taste - all delivered with less Sugar.
- A weight gainer with nutrition: Our mass protein powder contains a massive 60g of protein per serving, partnered with 7.5g of Creatine and 18 vitamins and minerals (B12, B6, C, Magnesium, Iron) to help you be at your best.
- For best results: To get the best results from Hyperbolic Mass, take 1 servings daily, either after training or as a snack between meals. Simply mix 4 scoops (300g) of the protein powder with 900ml of cold water and enjoy.
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XL Nutrition Xtra Mass 5.2kg Mass Gainer - Serious Mass Protein Powder - 50g Protein, 1000 Calories, Creatine Monohydrate, BCAA, Glutamine - 20 Servings, Strawberry Flavour
XL Nutrition
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XL Nutrition
XL Nutrition Xtra Mass 5.2kg Mass Gainer - Serious Mass Protein Powder - 50g Protein, 1000 Calories, Creatine Monohydrate, BCAA, Glutamine - 20 Servings, Strawberry Flavour
Why we love it
- Packed with 1000 extra calories.
- Enriched with 172g carbohydrates.
- Boosted with 50g protein.
Main Highlights
- Extra calories for muscle growth: This weight gainer provides 1000 calories per serving, ideal for those seeking serious mass protein powder options. It offers a convenient shake alternative to meet your caloric intake goals efficiently.
- Carbs for energy: With 172g of carbs per serving, this weight gain protein powder supports your body's energy needs. It's a key component in our mass protein powder, fueling your workouts and aiding digestion.
- High protein content: Delivering 50g per serving, this is the best protein powder for muscle gain. It supports muscle repair and growth, making it an essential part of any bulking protein powder regimen.
- Enriched with BCAA's and glutamimne: Loaded with BCAAs and glutamine, this 5kg protein powder helps reduce muscle soreness and fatigue, supporting muscle gain and recovery post-workout. It's a top choice for serious mass.
- Creatine for stregnth: Added creatine mono hydrate makes this bulk pure whey protein powder perfect for doubling your strength and lean muscle gains, enhancing the effectiveness of your gym protein powder routine.
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4
Out Angled Method Mass Gainer Powder, Milk Chocolate, 6kg, 100 Scoops | High Calorie, Whey Protein Powder, Weight Gain, Muscle Growth
OUT ANGLED
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OUT ANGLED
Out Angled Method Mass Gainer Powder, Milk Chocolate, 6kg, 100 Scoops | High Calorie, Whey Protein Powder, Weight Gain, Muscle Growth
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Why we love it
- Promotes post-workout muscle growth.
- Supports sustained energy supply.
- Great for daily bulking.
Main Highlights
- High-Quality Protein Source - A mass gainer supplement containing whey protein, derived from milk, provides a rich source of essential amino acids. Whey protein powder is well-known for its rapid absorption, making it an excellent choice for post-workout recovery and muscle growth.
- Balanced Carbohydrate Blend - The combination of maltodextrin, dextrose monohydrate, waxy maize, and fine oats creates a balanced carbohydrate blend with high calories. These complex and simple carbohydrates provide sustained energy, making them suitable for athletes and bodybuilders who need to refuel after intense workouts.
- Enhanced Caloric Intake - Mass gainer supplements are designed to help individuals with high-calorie needs gain and maintain muscle growth. The inclusion of whole milk powder contributes to the supplement's overall caloric content, making it a convenient way to boost daily calorie intake for those seeking to gain weight.
- Convenient for Bulking - This supplement is particularly beneficial for individuals in the bulking phase of their fitness journey. With a combination of whey protein and carbohydrates, it can help users meet their daily nutritional goals and support muscle growth.
- Gluten Alert - It's important to note Gluten Alert - It's important to note that the supplement may contain gluten due to the inclusion of fine oats.hat the supplement may contain gluten due to the inclusion of fine oats.
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Applied Nutrition Original Critical Mass - Weight Gainer with MCT Powder, High Calorie Protein Powder Mass Gainer (6kg - 25 Servings) (Chocolate)
Applied Nutrition
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Applied Nutrition
Applied Nutrition Original Critical Mass - Weight Gainer with MCT Powder, High Calorie Protein Powder Mass Gainer (6kg - 25 Servings) (Chocolate)
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Why we love it
- Ideal for hard gainers' needs.
- Quick digestive Waxy Maize Starch.
- Four exciting and delicious flavours.
Main Highlights
- PERFECT FOR HARD GAINERS: Original Mass weight gain protein powder is perfect for hard gainers who struggle to put on weight and gain mass. Using a mass gainer powder helps to ensure that growing muscles get the vital nutrients they need to recover and develop.
- WAXY MAIZE STARCH: This serious mass protein powder uses Waxy Maize Starch, which is revolutionary because it bypasses the stomach and goes straight to the intestines for digestion. It replenishes glycogen stores faster than traditional sources of carbohydrate.
- HIGH IN CALORIES, PROTEIN AND CARBOHYDRATES: This muscle gain protein powder makes a delicious shake that is high calorie, high protein and high in carbohydrate. This can be used as a high carbohydrate meal in the day or after a strenuous training session.
- DELICIOUS FLAVOURS: Original Mass comes in 6 tasty flavours so you have a delicious addition to your training regime.
- TESTED FOR ATHLETES: Applied Nutrition ensure that their protein powder mass gainer is extensively tested so that it meets the exacting standards of professional athletes. They are used by some of the world’s most elite athletes as part of their training.
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6
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73 kg, Packaging May Vary
Optimum Nutrition
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Optimum Nutrition
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73 kg, Packaging May Vary
11% OffFree Shipping
Why we love it
- Boosts muscle growth and performance.
- Supports muscle recovery effectively.
- Delicious variety of flavours.
Main Highlights
- CALORIE RICH PROTEIN SOURCE – the ultimate gainer powder which can be used post-workout or between meals
- SUPPORTS SERIOUS SIZE – great for those aspiring to be bigger, for those who find it hard to gain weight / muscle, or for those on the go who have high caloric needs due to intense training
- 1,255-1272 CALORIES per serving – when mixed with water
- 50 g – 53 g PROTEIN per serving
- 250 g+ CARBOHYDRATES per serving
- ADDED CREATINE, L-GLUTAMINE & GLUTAMIC ACID
- INSTANTISED POWDER – helps the powder dissolve easily and mixes well in a blender with other ingredients such as fruit and nut butters for added calories
- 24 VITAMINS & MINERALS per serving
- NO ADDED SUGAR
- AVAILABLE IN 6 LB TUBS OR 12 LB BAGS
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7
Myprotein Impact Whey Weight Gainer Protein (2.5kg (Pack of 1), Chocolate Smooth)
Myprotein
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Myprotein
Myprotein Impact Whey Weight Gainer Protein (2.5kg (Pack of 1), Chocolate Smooth)
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Why we love it
- Promotes healthy weight gain.
- Provides high-quality protein.
- Convenient and redesigned packaging.
Main Highlights
- 31g of protein
- 50g of carbs
- 388 calories per serving
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8
The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Chocolate, 5kg)
The Bulk Protein Company
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The Bulk Protein Company
The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Chocolate, 5kg)
13% OffFree Shipping
Why we love it
- Builds muscle with high protein.
- Promotes mass gain effectively.
- Offers excellent value for money.
Main Highlights
- 30g PROTEIN PER SERVING TO HELP BUILD MUSCLE - Protein Isolate powder that contains 30 grams of high quality Protein per serving. A convenient and easy way to help you meet your daily protein needs. Use after training to quickly heal micro-tears in muscle tissues, which speeds up recovery, reduces muscle soreness and leads to stronger and bigger muscles over time.
- PUT ON SIZE AND GAIN MASS - With 468 lean calories per serving, Serious Gainz protein powder is ideal when BULKING. Use as part of a balanced diet to help add body mass and increase weight gain. Contains 81g of carbohydrates which will help your body absorb the protein within, turning it into muscle mass to help towards improving your overall body composition.
- PROTEIN SHAKE THAT TASTES GREAT - Add 3 scoops of powder to 400-500ml of water or milk and mix well to create a great tasting Protein Shake! Can also be enjoyed in smoothies, with oats or when added to a pancake mix. Protein powders don't have to be boring, so we made 10 different flavours for you to choose from.
- HIGH QUALITY WHEY PROTEIN - Whey digests quickly and is rich in branched-chain amino acids (BCAAs). One of these BCAAs, Leucine, plays a major role in promoting muscle growth and recovery after resistance and endurance exercise. When amino acids are digested and absorbed into your bloodstream, they become available for muscle protein synthesis, which is the creation of new muscle.
- EXCELLENT VALUE 5kg TUB WITH 40 SERVINGS - With up to a month's supply of high quality protein powder, we offer great value for your money compared with other brands. We recommend one serving per day to consistently meet your daily protein goal. Consume immediately post-training on workout days and between breakfast and lunch on non-workout days. Comes with scooper for measurements.
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MUTANT Mass | Muscle Mass Gainer | 1100 Calories, 56g Protein, Whole Food Carbs, BCAAs, and Glutamine | Ultimate Hardcore Weight Gainer Shake | 2270g | Triple Chocolate
Mutant
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Mutant
MUTANT Mass | Muscle Mass Gainer | 1100 Calories, 56g Protein, Whole Food Carbs, BCAAs, and Glutamine | Ultimate Hardcore Weight Gainer Shake | 2270g | Triple Chocolate
Why we love it
- Specially formulated high-calorie content.
- Contains quality proteins and nutrients.
- Transparency of ingredients used.
Main Highlights
- HARDCORE MASS-BUILDING CALORIES – Delivers an incredible 1,100 nutrient-dense calories per serving to support fast muscle growth and strength gains.
- ADVANCED PROTEIN FORMULA – Includes whey protein isolate, hydrolyzed whey, micellar casein, and milk protein concentrate to power recovery and build lean mass.
- ELITE WHOLE-FOOD CARB SOURCES – Packed with complex carbohydrates from sweet potato, rolled oats, and waxy maize starch to provide clean, long-lasting energy.
- AMINO ACID & RECOVERY SUPPORT – Features 36g of essential amino acids (EAAs), including 10.4g Glutamine and 12.2g BCAAs, for muscle repair and growth.
- ENGINEERED FOR EXTREME RESULTS – Designed for athletes looking to smash plateaus, this gainer provides quality macros without unnecessary fillers.
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10
Weight Gainer High Protein Powder Shakes 4KG Vegetarian Serious Mass, Gainz Heavyweight, Weight Gain with Added Creatine, Glutamine and BCAA Powder Made in UK by PROELITE (4KG, Strawberry)
PROELITE
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PROELITE
Weight Gainer High Protein Powder Shakes 4KG Vegetarian Serious Mass, Gainz Heavyweight, Weight Gain with Added Creatine, Glutamine and BCAA Powder Made in UK by PROELITE (4KG, Strawberry)
Why we love it
- Maximizes muscle development with protein.
- Promotes weight gain effectively.
- Delicious and easy preparation.
Main Highlights
- 💪 𝟑𝟏𝐆 𝐏𝐑𝐎𝐓𝐄𝐈𝐍 𝐏𝐄𝐑 𝐒𝐄𝐑𝐕𝐈𝐍𝐆 𝐓𝐎 𝐇𝐄𝐋𝐏 𝐁𝐔𝐈𝐋𝐃 𝐌𝐔𝐒𝐂𝐋𝐄 - Our 2-Quality Source Protein powder provides 31 grams of premium-quality protein per serving, making it an easy and convenient solution to meet your daily protein requirements. Perfect for post-training recovery, this protein blend aids in repairing micro-tears in muscle tissue, accelerating recovery, and reducing muscle soreness. With regular use, it supports muscle growth and strength, helping you achieve stronger and larger muscles over time.
- 💪 𝐏𝐔𝐓 𝐎𝐍 𝐒𝐈𝐙𝐄 𝐀𝐍𝐃 𝐆𝐀𝐈𝐍 𝐌𝐀𝐒𝐒 - Packed with 478 lean calories per serving, Gains Protein Powder is designed to support your bulking goals. As part of a balanced diet, it helps increase body mass and promotes healthy weight gain. With 84g of carbohydrates per serving, this formula aids in protein absorption, turning nutrients into muscle mass to enhance your overall body composition. Ideal for those looking to build size and strength effectively.
- 💪 𝐏𝐑𝐎𝐓𝐄𝐈𝐍 𝐒𝐇𝐀𝐊𝐄 𝐓𝐇𝐀𝐓 𝐓𝐀𝐒𝐓𝐄𝐒 𝐆𝐑𝐄𝐀𝐓 - Enjoy a delicious protein boost by mixing 3 scoops of powder with 300-400ml of water or milk for a great-tasting protein shake! Versatile and easy to incorporate, it can also be blended into smoothies, stirred into oats, or added to pancake batter. Protein powders don’t have to be dull—that’s why we offer 5 unique flavors for you to enjoy variety with every serving.
- 💪 𝐇𝐈𝐆𝐇 𝐐𝐔𝐀𝐋𝐈𝐓𝐘 𝐖𝐇𝐄𝐘 𝐏𝐑𝐎𝐓𝐄𝐈𝐍 - Our whey protein is crafted for rapid digestion and packed with branched-chain amino acids (BCAAs), including Leucine—a key amino acid that supports muscle growth and recovery after both resistance and endurance exercise. When consumed, these amino acids are quickly absorbed into the bloodstream, fueling muscle protein synthesis and enabling the creation of new muscle tissue. Perfect for anyone looking to enhance muscle repair and growth.
- 💪 𝐄𝐗𝐂𝐄𝐋𝐋𝐄𝐍𝐓 𝐕𝐀𝐋𝐔𝐄 𝟒𝐊𝐆 𝐓𝐔𝐁 𝐖𝐈𝐓𝐇 𝟑𝟐 𝐒𝐄𝐑𝐕𝐈𝐍𝐆𝐒 - Get up to a month’s supply of premium protein powder with our 4kg tub, offering outstanding value compared to other brands. Each tub includes 32 servings, with one serving recommended daily to help you consistently reach your protein goals. On workout days, consume immediately post-training, and on non-workout days, enjoy it between breakfast and lunch. For easy measurement, each tub comes with a convenient scooper
- 💪 𝐄𝐍𝐇𝐀𝐍𝐂𝐄𝐃 𝐖𝐈𝐓𝐇 𝐂𝐑𝐄𝐀𝐓𝐈𝐍𝐄 𝐌𝐎𝐍𝐎𝐇𝐘𝐃𝐑𝐀𝐓𝐄, 𝐋-𝐆𝐋𝐔𝐓𝐀𝐌𝐈𝐍𝐄, 𝐚𝐧𝐝 𝐁𝐂𝐀𝐀𝐬 - Our formula stands out with added Creatine Monohydrate, L-Glutamine, and BCAAs to support superior recovery and performance—ingredients not commonly included by other brands. Creatine aids in strength and power, L-Glutamine supports muscle repair, and BCAAs boost muscle recovery post-workout. This unique blend is designed to help you recover faster and come back stronger, setting it apart from standard protein powders.
- 💪 𝐕𝐄𝐆𝐄𝐓𝐀𝐑𝐈𝐀𝐍 💪 𝐆𝐌𝐎 𝐅𝐑𝐄𝐄 💪 𝐇𝐀𝐋𝐀𝐋 💪 𝐊𝐎𝐒𝐇𝐄𝐑 💪 𝐌𝐀𝐃𝐄 𝐈𝐍 𝐔𝐊
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