10 Best Isopure in The UK

Last updated on 15/08/2025

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Best Choice

9.9

Exceptional

Dymatize

Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 2264g - Whey Protein Hydrolysat + Isolat Pulver

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Why We Love It

Premium, easily digestible protein source.
Ideal for post-workout recovery.
Suitable for vegetarians, athletes.

Main Highlights

THE TOP-QUALITY RECIPE of our whey isolate protein powder delivers 25 g of the highest-quality protein per serving with BCAAs and L-leucine, making it both gluten free and suitable for vegetarians
HYDROLYSIS breaks the whey protein isolate into smaller amino acid chains, which makes it exceptionally quick to absorb and the perfect choice before or after training
THE FAT AND SUGAR-FREE protein powder contains less than 116 calories per serving (mixed with water), making it perfect for athletes who are optimising both their protein and calorie intakes
ACCORDING TO INFORMED CHOICE, every substance in the iso whey protein powder is of the highest standard, so athletes can rest easy knowing their product is top quality, especially during competitions
WINNER OF the isolate of the year award from 2013 to 2017, our ISO 100 premium protein powder meets the highest quality standards and is the perfect protein supplement before and after training

Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Double Rich Chocolate Flavour, 73 Servings, 2.26 kg

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Why We Love It

Supports fitness journey from start.
Assists in muscle gain, recovery.
Variety of flavors available.

Main Highlights

Optimum Nutrition’s Gold Standard 100% WHEY is the world’s best-selling protein powder* designed to support your fitness journey from day one
FAST-ABSORBING whey protein with whey protein isolate as the main ingredient helps with muscle gain and supports recovery* after every training session
The ON whey protein formula is Informed Choice certified, contains naturally-occurring BCAAs and GLUTAMINE and is LOW IN SUGAR and fat
Available in a VARIETY OF SIZES and FLAVOURS: double rich chocolate, banana cream, vanilla ice cream, unflavored protein powder and more
EASY & CONVENIENT: mix one scoop in 180-240 ml of cold water; best enjoyed in the morning or/and during the 30 minutes just before or immediately after training
*Source: Euromonitor International Limited; Consumer Health 2023 edition, Sports Protein Powder category, % retail value shares, 2022 data
** Source EFSA Journal 2010;8(10):1811; 2011;9(6):2203

Premium Body Nutrition

PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1)

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Why We Love It

High-quality Whey Protein isolate.
Promotes muscle growth maintenance.
Supports bone health.

Main Highlights

Chocolate - Whey Protein-ISOLATE with 87Percentage+ Protein, 2.27 kg, jar with a delicious Banana flavour
A jar with a delicious Banana flavour
Protein contributes to growth in muscle mass and to the maintenance of normal bones.
1-Protein contributes to a growth in muscle mass.
2-Protein contributes to the maintenance of normal bones.

Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Vanilla Flavour, 31 Servings, 930 g

20% OffFree Shipping

Why We Love It

High in quality whey protein.
Support muscle growth and maintenance.
Low in sugar and fat.

Main Highlights

Gold Standard whey protein powder contains 25g (83 percent) of high quality 100 percent pure whey isolate protein blend per serving to suport lean muscle gain*
Whey protein isolate is ultra-filtered for exceptional purity; it supports the growth and maintenance of muscle mass and the maintenance of normal bones*
Informed Choice certified ON whey protein powder contains low sugar (0.3 g), low fat (0.4 g) and 5.5 g of naturally occurring essential amino acids, BCAAs, per serving
This high protein powder is perfect as a protein shake, pre workout and post workout for both men and women; comes in vanilla, chocolate and strawberry flavours
To create perfect protein drinks, add 30 g (1 rounded scoop) to 200 ml of cold water and mix well

Optimum Nutrition Gold Standard Whey Protein, Muscle Building Powder with Naturally Occurring Glutamine and Amino Acids, Double Rich Chocolate, 29 Servings, 899 g, Packaging May Vary

25% OffFree Shipping

Why We Love It

Supports muscle gain and recovery.
Certified, low-sugar protein formula.
Variety of sizes, flavors.

Main Highlights

Optimum Nutrition’s Gold Standard 100% WHEY is the world’s best-selling protein powder* designed to support your fitness journey from day one.
FAST-ABSORBING whey protein with whey protein isolate as the main ingredient helps with muscle gain and supports recovery* after every training session.
The ON whey protein formula is Informed Choice certified, contains naturally-occurring BCAAs and GLUTAMINE and is LOW IN SUGAR and fat.
Available in a VARIETY OF SIZES and FLAVOURS: double rich chocolate, banana cream, vanilla ice cream, unflavored protein powder and more.
EASY & CONVENIENT: mix one scoop in 180-240 ml of cold water; best enjoyed in the morning or/and during the 30 minutes just before or immediately after training.
*Source: Euromonitor International Limited; Consumer Health 2023 edition, Sports Protein Powder category, % retail value shares, 2022 data.
** Source EFSA Journal 2010;8(10):1811; 2011;9(6):2203.

The Bulk Protein Company

SERIOUS PROTEIN – Protein Powder – 4kg – Low Carb – Supports Lean Muscle Growth – Recovery Supplement - The Bulk Protein Company - 133 Servings (Chocolate)

20% OffFree Shipping

Why We Love It

Aids in muscle growth.
Low calorie protein source.
Great taste, excellent value.

Main Highlights

✅ 24g PROTEIN PER SERVING TO BUILD LEAN MUSCLE - A convenient way to help meet your daily protein needs. Use after training to quickly heal micro-tears in muscle tissues, speed up recovery and reduce muscle soreness for STRONGER and BIGGER muscles over time.
✅ HIGH PROTEIN, LOW CALORIES, LOW CARBS - Only 114 Calories Per Serving! Serious Protein powder is 80% Protein with Low Carbs, Sugars, and Fats. Ideal for adding LEAN MASS! Perfect to use as a meal replacement or part of a calorie-controlled diet, while trying to lean out, or for those simply looking to support MUSCLE GAINS.
✅ HIGH QUALITY INGREDIENTS - Premium blend of Whey Protein Concentrate, Micellar Casein and Soy Protein Isolate, a combination of slow and fast releasing proteins for total protein synthesis throughout the day. Also contains GLUTAMINE PEPTIDE, essential for muscle recovery and more bioavailable than regular glutamine, helping aid MUSCLE GROWTH.
✅ PROTEIN SHAKE THAT TASTES GREAT - Add 1 rounded scoop (30g) to 250ml of cold water or skimmed milk and shake well to create a great tasting Protein Shake! Can also be enjoyed in smoothies, with oats or when added to a pancake mix. For best results consume 1 serving (30g) one to three times per day
✅ EXCELLENT VALUE - More than 6 weeks supply in one tub, when following our recommended servings. Comes with scoop for measurements.

Applied Nutrition Clear Whey Isolate - Whey Protein Isolate, Refreshing High Protein Powder, Fruit Juice Style Flavours (Orange Squash) (875g - 35 Servings)

27% OffFree Shipping

Why We Love It

Tastes like delicious fruit water.
Low calorie, high protein.
Approved for athletes by WADA.

Main Highlights

NOT YOUR AVERAGE PROTEIN SHAKE: our Clear Whey Protein uses ultra-hydrolysed whey protein isolate to create a water that tastes more like delicious fruit water than your typical protein milkshake. Clear Whey is absorbed rapidly and it is packed with over 21g protein, has only 1g of carbs, and has less than 0.25g of sugar & fat.
DELICIOUS AND REFRESHING: we have created a protein water supplement that is tasty, light and refreshing to drink. The Clear Whey Protein is available in a range of fruity flavours, so there is something for everyone.
LOW CALORIE: our formula provides a low-calorie option for those looking to increase their protein intake. Each serving of Clear Whey Protein contains just 90 calories!
8 DELICIOUS FLAVOURS: Applied Nutrition’s Clear Whey Protein is available in eight delicious flavours: Cherry & Apple, Cranberry & Pomegranate, Grapefruit, Orange Squash, Strawberry & Lime, Strawberry & Raspberry, Twirler Ice Cream and Watermelon. Just mix with water.
TESTED FOR ATHLETES: Every batch of Critical Whey is batch tested and accredited by Informed Sports, a global quality-assurance programme for sports nutrition products which independently test supplements for all substances listed on the World Anti-Doping Agency (WADA) banned substance list.

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

Isopure Chocolate Whey Protein Isolate Powder, High in Protein with 25 g per Serve, Low in Sugar, No Artificial Flavours or Sweeteners, Made with Only 6 Ingredients, 480 g

20% OffFree Shipping

Why We Love It

Pure ingredients you can trust.
High protein for daily support.
No artificial flavors or sweeteners.

Main Highlights

MADE WITH INGREDIENTS YOU NEED, NOTHING YOU DON'T: Containing only six ingredients, including 100% pure whey protein isolate because when it comes to looking and feeling good, LESS IS MORE
25 G HIGH PROTEIN PER SERVING: Delivers 25 g protein from 100% Whey Protein Isolate to complement your daily routine and support your protein intake
LOW SUGAR AND LOW FAT: Isopure Chocolate Whey Isolate delivers quality protein with minimal sugar and fat, an effortless way to boost your intake without unecessary extras
NO ARTIFICIAL FLAVOURS OR SWEETENERS: Enjoy a rich chocolate protein powder with simple ingredients and no artificial flavours, just great-tasting nutrition
EASY TO SHAKE, BLEND, OR BAKE: Mix with dairy or plant-based milk, blend into smoothies, or use in baking to make protein brownies, protein pudding, and more; however you take it, Isopure Whey Protein Isolate fits effortlessly into your lifestyle; contains Steviol Glycosides from Stevia, with no artificial sweeteners

Incredible taste with smooth texture.
Superior nutritional plant-based profile.
Promotes optimum female wellbeing.

Main Highlights

𝗡𝗘𝗪 & 𝗜𝗠𝗣𝗥𝗢𝗩𝗘𝗗 𝗙𝗢𝗥𝗠𝗨𝗟𝗔𝗧𝗜𝗢𝗡 – Packed with cutting-edge ingredients & nutritionist approved, our tried & tested blend, now elevated with 50% fewer carbohydrates per serving, a patented pea-protein source for improved bioavailability, a dual magnesium source for greater efficacy, and Himalayan Pink salt for the rich electrolyte benefits. Contains only 2mg of caffeine per serving alongside the Ginseng & Guarana. Gluten-free, Sucralose-Free & Third Party Tested for Heavy Metals!
𝗜𝗡𝗖𝗥𝗘𝗗𝗜𝗕𝗟𝗘 𝗧𝗔𝗦𝗧𝗘 & 𝗧𝗘𝗫𝗧𝗨𝗥𝗘 – Only the highest quality of ingredients to ensure an incredible taste profile and ultimate smooth texture. Mix with water or nut milk for a creamy & lean plant based protein shake. No chalky or gritty texture.
𝗦𝗨𝗣𝗘𝗥𝗜𝗢𝗥 𝗡𝗨𝗧𝗥𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗣𝗥𝗢𝗙𝗜𝗟𝗘 – 20g of protein per 30g serving and all flavours are gluten free, soya free, added sugar free, dairy free, and non-GMO. Our Pea Protein has been infused with White Hemp Protein for an effective amino acid profile for the highest quality of plant-based protein possible.
𝗡𝗨𝗧𝗥𝗜𝗧𝗜𝗢𝗡𝗜𝗦𝗧 𝗙𝗢𝗥𝗠𝗨𝗟𝗔𝗧𝗘𝗗 𝗙𝗢𝗥 𝗪𝗢𝗠𝗘𝗡 – Blended with Peruvian Maca, the entire B Vitamin Complex for hair, skin, and nails; high levels of Iron, Magnesium, Calcium, and L-Carnitine for energy and bone density, and Flaxseed for Omega-3.
𝗢𝗣𝗧𝗜𝗠𝗨𝗠 𝗪𝗘𝗟𝗟𝗕𝗘𝗜𝗡𝗚 – 20g of plant protein per serving with an incredible macronutrient profile. Suitable for daily optimal wellbeing, even if not exercising – makes for a delicious breakfast or snack and curbs the dreaded sweet tooth! Also suitable for baking, protein pancakes, and smoothies.
𝗨𝗞 𝗣𝗥𝗢𝗗𝗨𝗖𝗘𝗗 & 𝗜𝗡𝗗𝗘𝗣𝗘𝗡𝗗𝗘𝗡𝗧𝗟𝗬 𝗧𝗘𝗦𝗧𝗘𝗗 – Our products have been developed and manufactured in the UK by leading nutritionists and independently tested to ensure you get only the highest quality, premium nutrients you need and no nasties you don't, all with a delicious taste!
𝗘𝗮𝗰𝗵 𝗯𝗮𝗴 𝗶𝘀 𝟲𝟬𝟬𝗴 | 𝟮𝟬𝗴 𝗼𝗳 𝗽𝗿𝗼𝘁𝗲𝗶𝗻 𝗽𝗲𝗿 𝟯𝟬𝗴 𝘀𝗲𝗿𝘃𝗶𝗻𝗴

8.8

Excellent

Save 13%

We scanned 205 products

We reviewed these offers relevant to the Isopure within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Dymatize, Optimum Nutrition, Premium Body Nutrition, The Bulk Protein Company, Applied Nutrition, Isopure, Free Soul, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Isopure in the market, we considered we took a deep dive into 1026 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 2264g - Whey Protein Hydrolysat + Isolat Pulver. We love many things about this product by Dymatize. What sets it apart from the competition is Premium, easily digestible protein source, Ideal for post-workout recovery, Suitable for vegetarians, athletes.
The best value product for most shoppers and where user satisfaction is continuously the highest is Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Double Rich Chocolate Flavour, 73 Servings, 2.26 kg by Optimum Nutrition based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Isopure and the best cost-to-value ratio is Applied Nutrition Clear Whey Isolate - Whey Protein Isolate, Refreshing High Protein Powder, Fruit Juice Style Flavours (Orange Squash) (875g - 35 Servings)at Applied Nutrition with a 27% discount.
Our list of the best Isopure is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Isopure in The UK

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We scanned 205 products

We concluded that: