Best Weight Gainer Protein Powder of 2025
Last updated on 27/09/2025
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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 Dutch Chocolate 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 Dutch Chocolate 6kg: High Calorie Mass Gainer Protein Powder for Muscle Building and Weight Gain - Improved Formula & Flavour with 7.5g Creatine Monohydrate and Less Sugar
9% OffFree Shipping
Why we love it
- Enhances muscle mass effectively.
- Offers nutritional weight gain.
- Delicious chocolate flavor.
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 chocolate flavour mass gainer contains natural cocoa, 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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3
MuscleTech MassTech Extreme Protein Powder, Weight & Muscle Mass Gainer, Whey Mass Protein Powder With 3g Creatine, 80g Protein, 2,274 Calories, 2.72kg, Triple Chocolate
MuscleTech
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MuscleTech
MuscleTech MassTech Extreme Protein Powder, Weight & Muscle Mass Gainer, Whey Mass Protein Powder With 3g Creatine, 80g Protein, 2,274 Calories, 2.72kg, Triple Chocolate
Why we love it
- Boosts performance and training intensity.
- Optimal blend for immune support.
- Helps overcome workout plateaus.
Main Highlights
- Get bigger and stronger; each serving of the 5-In-1 mass gainer formula has 80 g protein, Over 400 g carbs, over 2,000 Calories, 3 g creatine And 23 vitamins and minerals
- Smash performance plateaus, it also contains bcaas from whey protein plus zinc, vitamin C, B6 and B12, to support the normal functioning of your immune system, especially important when pushing training to the max
- High-density, clean-calorie shake, reignite your goals with a great-tasting shake that provides a supplemental 2,000 plus calories per day, an amount scientifically studied in university Rresearch
- Support Recovery, each serving, 4 scoops mixed with 500 ml skimmed milk, of mass-tech extreme 2000 delivers a powerful carbohydrate recovery blend that promotes muscle glycogen replenishment
- Immune support, every serving provides essential micronutrients, including zinc, vitamin c, B6 And B12, to support the normal functioning of your immune system, especially important when you’re pushing your training to the max
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4
Dymatize Super Mass Gainer Rich Chocolate 2943g - Weight-Gainer Pulver + Kohlenhydrate, BCAAs und Casein
Dymatize
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Dymatize
Dymatize Super Mass Gainer Rich Chocolate 2943g - Weight-Gainer Pulver + Kohlenhydrate, BCAAs und Casein
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Why we love it
- High-quality protein benefits muscle growth.
- Reduces tiredness and fatigue.
- Assurance of highest product quality.
Main Highlights
- OUR MASSIVE COMBINATION of creatine, carbohydrates, BCAAs and proteins provides valuable nutrients to meet the particular needs of your bulking phase
- DEVELOPED SPECIALLY FOR BODYBUILDERS, hardgainers and powerlifters and their specific needs, Protein Weight Gainer provides appropriate calories and nutrients, especially in the bulking phase
- EVERY SERVING of Super Mass Gainer provides up to 243 g of carbohydrates, 52 g of protein, 11–12 g of BCAAs and 3 g of fine Creapure creatine, as well as five vitamins to help reduce tiredness
- ACCORDING TO INFORMED CHOICE, every substance in the Mass Gainer powder is of the highest standard, so athletes can rest easy knowing their product is top quality, especially during competitions
- FOR BEST RESULTS when bulking, mix one serving in 700 ml of water every day after training. The mass gainer protein shake is gluten free and suitable for vegetarians
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5
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
11% OffFree Shipping
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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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6
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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7
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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Anabolic Gainz 5kg – Mass Gainer – 30g Protein Powder – Contains 3g Creatine Per Serving – Post Workout Recovery Fuel to Build Lean Muscle – 40 Servings – GMP Certified – TBPC (Vanilla)
The Bulk Protein Company
15% OffFree Shipping
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The Bulk Protein Company
Anabolic Gainz 5kg – Mass Gainer – 30g Protein Powder – Contains 3g Creatine Per Serving – Post Workout Recovery Fuel to Build Lean Muscle – 40 Servings – GMP Certified – TBPC (Vanilla)
15% OffFree Shipping
Why we love it
- Supports fast muscle growth.
- Packed with essential nutrients.
- Easy to mix.
Main Highlights
- ANABOLIC GAINZ – Is a protein powder, designed to supplement muscle growth and to be consumed as a post-workout shake. We’re now available in the staple flavours, these are Chocolate, Strawberry, and Vanilla.
- NUTRITIONALS – Our Anabolic Gainz Mass Gainer comes in a 5kg tub containing 30g of Protein and is packed with over 450 calories! In addition, we’ve added 3g of Creatine per serving to support muscle growth, recovery, and performance.
- MACROs – Our shake contains Carbohydrates, Creatine, Amino Acids, Vitamins, and Minerals. It’s a great-tasting protein drink that will slot straight into your supplement stack.
- 40 SERVINGS – With over a month's supply this protein powder will help reach your goals. It mixes well and doesn’t require a blender, simply look out for our TBPC Gainz 800ml Shaker.
- TBPC – Here at The Bulk Protein Company we're serious about value, huge protein levels, and incredible results in your training & diet. If you're serious about training, Anabolic Gainz is for you. GMP Certified, Manufactured in the UK.
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9
Applied Nutrition Critical Mass Professional - Weight Gain Protein Powder, High Calorie Weight Gainer, Lean Mass (2.4kg - 16 Servings) (Chocolate)
Applied Nutrition
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Applied Nutrition
Applied Nutrition Critical Mass Professional - Weight Gain Protein Powder, High Calorie Weight Gainer, Lean Mass (2.4kg - 16 Servings) (Chocolate)
19% OffFree Shipping
Why we love it
- High-quality lean mass gainz.
- New formula with whey isolate.
- Tested for athletic assurance.
Main Highlights
- THE UK'S MOST TRUSTED MASS GAINER FOR SERIOUS SIZE & STRENGTH – Critical Mass Professional is the ultimate high-calorie weight gainer, engineered for those who want to bulk up, increase muscle mass, and fuel intense workouts. This mass gainer supplement is trusted by hard gainers, bodybuilders, and athletes looking for serious results.
- 1,000+ CALORIES PER SERVING – PACKED WITH HIGH-QUALITY PROTEIN & CARBS – Delivers a caloric surplus essential for lean muscle gain. Each serving contains a blend of fast-absorbing and slow-digesting proteins, including ISO-XP Whey Isolate, to maximize muscle recovery and growth. Combined with a premium carbohydrate complex, it helps sustain energy levels and support muscle glycogen replenishment.
- POWERFUL CREATINE & GLUTAMINE COMPLEX FOR PERFORMANCE & RECOVERY – Enhanced with Creatine Monohydrate, Critical Mass Professional boosts strength, endurance, and muscle power output for high-intensity training. Includes L-Glutamine & Glutamic Acid, key amino acids that aid muscle recovery, reduce fatigue, and support immune function.
- OPTIMAL WEIGHT GAIN FORMULA FOR HARD GAINERS & ATHLETES – Whether you struggle to put on weight, need extra calories due to intense training, or want to bulk up, this high-calorie gainer provides the perfect macronutrient balance. Ideal as a post-workout shake, meal replacement, or between-meal supplement for continuous muscle fuel.
- EASY MIXING & DELICIOUS FLAVOURS FOR MAXIMUM ENJOYMENT – Designed for convenience, this instantized protein powder mixes effortlessly in water or milk, creating a smooth, creamy texture with no lumps or grittiness. Available in 6 mouth-watering flavours: Chocolate, Banana, Vanilla, Chocolate Mint, Strawberry, and White Chocolate & Raspberry.
- TESTED FOR ATHLETES: at Applied Nutrition we carefully select and monitor each product through our quality management system to bring you the highest level of assurance. Critical Mass Professional is no exception and is tested at an ISO 17025 accredited lab.
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USN Muscle Fuel Anabolic All-In-One Muscle Mass Gainer, Strawberry Flavour - 2kg, 54g Protein Powder, 5g Creatine Powder & 5g BCAA Powder For Maximum Muscle Growth, Post Workout Recovery Drink Mix
USN
20% OffFree Shipping
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USN
USN Muscle Fuel Anabolic All-In-One Muscle Mass Gainer, Strawberry Flavour - 2kg, 54g Protein Powder, 5g Creatine Powder & 5g BCAA Powder For Maximum Muscle Growth, Post Workout Recovery Drink Mix
20% OffFree Shipping
Why we love it
- High protein content ensures growth.
- Enhances physical performance substantially.
- Includes industry-leading nutrition formula.
Main Highlights
- USN Muscle Fuel Anabolic protein drink mix: High protein shake powder with Vitamins, Minerals, Carbohydrates, BCAAs, Amino Acids and Creatine. Premium dietary supplement designed to support muscle building
- Premium women's and men's supplements: USN diet supplements offer proven benefits, when taken alongside a balanced diet and healthy lifestyle. Always consult a healthcare professional first
- Mass gainer protein powder: Strawberry flavoured drink powder with 54g of premium quality protein, 77g of carbohydrates and 850mg of HMB to support muscle recovery, growth and performance
- Reach your goals: All in one muscle gain building stack, combined with raw creatines and carbohydrates, so creatine is easily absorbed and transported around the body. Easy to mix with water
- Ultimate Sports Nutrition: USN are at the forefront of sports nutrition research, making effective sports nutrition supplements for professional and non-professional athletes, pre or post workout
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