Best High Protein Whey Isolate of 2025
Last updated on 17/09/2025
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Best Choice
1
Reflex Nutrition Isolate Pro - 83% Premium Protein from Whey Isolate Protein Powder - Fast Absorption, Low Lactose, Low Fat, Low Sugar Protein Shake - Muscle Gain (Vanilla, 1.8kg, 60 Servings)
Reflex
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Reflex
Reflex Nutrition Isolate Pro - 83% Premium Protein from Whey Isolate Protein Powder - Fast Absorption, Low Lactose, Low Fat, Low Sugar Protein Shake - Muscle Gain (Vanilla, 1.8kg, 60 Servings)
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Why we love it
- High protein without extra calories.
- Optimal for muscle gain.
- Effortlessly blends into shakes.
Main Highlights
- Premium Protein Excellence: Reflex Isolate Pro is made from whey isolate stripped of most fats and carbs, ensuring high protein purity - Ideal for increasing protein intake without extra calories and suitable for those with lactose intolerance
- Optimal Nutritional Values: Each 30g scoop of whey protein isolate provides 25g of protein, Less than 0.5g of fat and Less than 0.5g of carbs - The ideal choice for those seeking muscle gain and lean mass maintenance with minimal calorie intake (103 kcal per serving)
- Effortless Mixing: This whey protein powder blends smoothly into water or milk for silky protein shakes and can be easily incorporated into various culinary creations, serving as a post workout muscle growth aid or a healthy protein snack
- Optimised for Rapid Recovery: Reflex grass fed whey protein powder is ultra-filtered for fast absorption, making it as a post workout protein snack - With whey protein isolate, it's the highest purity whey to maximise muscle growth
- Manufactured in an informed sport registered facility: Reflex Isolate Pro whey protein supplement is vegetarian-friendly, Halal-certified, free from hormones, and with no added sugars, artificial colours or soy protein - Contains soy derivatives
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Value for Money
2
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
Optimum Nutrition
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Optimum Nutrition
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
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
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3
Applied Nutrition Critical Whey Protein Powder 2kg - High Protein Powder, Protein Milkshake, Muscle Building Supplement with BCAAs & Glutamine (2kg - 67 Servings) (White Choco Bueno)
Applied Nutrition
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Applied Nutrition
Applied Nutrition Critical Whey Protein Powder 2kg - High Protein Powder, Protein Milkshake, Muscle Building Supplement with BCAAs & Glutamine (2kg - 67 Servings) (White Choco Bueno)
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Why we love it
- Promotes muscle building and maintenance.
- Quick and easy preparation.
- Assures highest quality for athletes.
Main Highlights
- BUILD & MAINTAIN MUSCLE: Applied Nutrition protein powder is an excellent way to build up your muscles when you do strength training. Protein is an essential part of your diet to help maintain muscle mass, so drinking the shake as recommended will help you to retain your muscle development.
- EASY TO PREPARE: This high protein powder mixes incredibly well with water or low-fat milk. You can shake it up when you are running late or on the go in no time.
- TESTED FOR ATHLETES: Every ingredient within this product is carefully selected and monitored through our quality management system to bring you the highest level of assurance. Final products are produced and packaged in an ISO 22000, BRC, GMP and Halal accredited laboratory.
- VARIETY OF FANTASTIC FLAVOURS: You can pick from multiple available flavours for your protein milkshake. Never again will you have to drink tasteless protein supplements.
- GREAT SOURCE OF PROTEIN: Applied Nutrition Critical Whey powder is a wonderful source of protein. The combination of Whey Protein Concentrate, Whey Protein Isolate and Hydrolysed Whey Protein makes the perfect muscle building supplement.
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4
NXT Nutrition Beef Protein Isolate Powder - Protein Powder High in Natural Amino Acids - Paleo, Keto Friendly - Dairy and Gluten Free - Muscle Recovery | 1.8kg | Ice Blast
NXT Nutrition
4% Off
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NXT Nutrition
NXT Nutrition Beef Protein Isolate Powder - Protein Powder High in Natural Amino Acids - Paleo, Keto Friendly - Dairy and Gluten Free - Muscle Recovery | 1.8kg | Ice Blast
4% Off
Why we love it
- 18 delicious fruit flavors.
- Zero stomach pain guaranteed.
- Perfect for keto lifestyles.
Main Highlights
- ★BEEF PROTEIN POWDER, IN 18 RIDICULOUSLY DELICIOUS FRUIT FLAVOURS- Clean, crisp and refreshing fruit flavours make it taste more like a juice than heavy milky whey protein shakes mixes easily in water or juice for a perfect post workout protein shake. PLEASE NOTE-This is not your typical beef protein powder
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5
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, White Chocolate Raspberry Flavour, 30 Servings, 900 g
Optimum Nutrition
18% OffFree Shipping
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Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, White Chocolate Raspberry Flavour, 30 Servings, 900 g
18% OffFree Shipping
Why we love it
- Supports muscle gain and recovery.
- Variety of flavors available.
- Convenient and easy to use.
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
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6
Organic Whey Protein Powder (600g) - Grass Fed Unflavoured Organic Protein Powder by TheHealthyTree Company - Low Carb Natural Protein for Muscle Growth & Recovery
TheHealthyTree Company
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TheHealthyTree Company
Organic Whey Protein Powder (600g) - Grass Fed Unflavoured Organic Protein Powder by TheHealthyTree Company - Low Carb Natural Protein for Muscle Growth & Recovery
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Why we love it
- Sourced from sustainable farming practices.
- Ideal for post-workout recovery.
- Promotes easy digestion.
Main Highlights
- GRASS FED WHEY PROTEIN POWDER - Our organic whey protein powder is sourced from grass-fed, pasture raised cows in Germany, to the highest European Soil Association standards (DA25404). This ensures you're getting the best possible fuel for your body, while supporting sustainable farming practices.
- UNFLAVOURED & NO ADDITIVES - Enjoy the natural, unflavoured creamy taste of our whey protein powder, which is perfect for mixing into your smoothies, shakes, and baking recipes. Unlike many alternatives, our whey is hormone free, gluten free, soy free, Non-GMO and has absolutely no sweeteners or added sugar - halle…MOO-jah.
- 80% PURE WHEY PROTEIN - Our organic protein powder contains a high concentration of naturally occurring amino acids and BCAAs. In addition to being a fantastic vegetarian protein source, it dissolves easily in water and is ideal for post-workout recovery and muscle growth.
- THE RIGHT WAY TO WHEY - Use our protein powder organic to make great tasting low carb keto baking recipes like flapjacks and pancakes. In the morning or after the gym, just mix 1 or 2 tablespoons into your shaker with water, milk or nut milk. If you’ve got more time, blend with frozen fruit to make a delicious smoothie that’s packed with vitamins.
- EASY DIGESTION - We’re proud to say that our whey passes through a leading ceramic microfiltration system to create the freshest, creamiest natural whey protein on the planet. Not only is it kinder to the environment, it dissolves well and is kind to your digestive system too, without the uncomfortable bloated feeling of some other protein powders.
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7
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
PINK SUN
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PINK SUN
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
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Why we love it
- Premium quality ensures exceptional results.
- Suitable for many diets.
- Ultra-filtered for pure protein.
Main Highlights
- Premium quality, SOY FREE, undenatured whey protein isolate powder 1kg
- From grass-fed hormone-free cows' milk with 92% protein
- Ultra-filtered to remove carbohydrate, fat and lactose
- Unflavoured natural taste - no added sugar or artificial sweeteners
- Gluten free, suitable for vegetarian and wholefood diets
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8
Applied Nutrition ISO XP Whey Isolate - Whey Protein Isolate Powder, ISO-XP Funky Yummy Flavours (1kg - 40 Servings) (Choco Bueno)
Applied Nutrition
28% OffFree Shipping
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Applied Nutrition
Applied Nutrition ISO XP Whey Isolate - Whey Protein Isolate Powder, ISO-XP Funky Yummy Flavours (1kg - 40 Servings) (Choco Bueno)
28% OffFree Shipping
Why we love it
- High-quality protein for recovery.
- Low-carb for keto diets.
- Delicious flavors for everyone.
Main Highlights
- High-Quality Whey Protein Isolate: Contains 95% protein per serving, providing a pure and efficient source of protein to support muscle recovery and growth.
- Low Carbohydrate Content: With less than 1g of carbs per serving, this whey protein isolate is perfect for those following a low-carb or keto diet.
- Low in Sugar and Fat: Enjoy a protein shake with minimal sugar and fat, making it an excellent choice for anyone seeking a leaner, healthier supplement.
- Instantized for Easy Mixing: The soy-free, instantized formulation ensures smooth and easy mixing, so you get a lump-free protein shake every time.
- Whey from European Grass-Fed Cows: Sourced from high-quality, grass-fed cows in Europe, ensuring a premium protein powder with a better nutrient profile.
- Delicious Flavours to Suit Every Taste - Available in Choco Honeycomb, Choco Caramel, Choco Peanut, Vanilla, Strawberry, Banana, Cafe Latte, and more, offering great taste with premium nutrition.
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9
Applied Nutrition Clear Whey Isolate - Whey Protein Isolate, Refreshing High Protein Powder, Fruit Juice Style Flavours (Orange Squash) (875g - 35 Servings)
Applied Nutrition
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Applied Nutrition
Applied Nutrition Clear Whey Isolate - Whey Protein Isolate, Refreshing High Protein Powder, Fruit Juice Style Flavours (Orange Squash) (875g - 35 Servings)
30% 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.
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10
Isopure Unflavoured Whey Protein Isolate Powder, High in Protein with 25 g per Serve, Low in Sugar, No Artificial Flavours or Sweeteners, Made with Only 2 Ingredients, 435 g
Isopure
33% OffFree Shipping
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Isopure
Isopure Unflavoured Whey Protein Isolate Powder, High in Protein with 25 g per Serve, Low in Sugar, No Artificial Flavours or Sweeteners, Made with Only 2 Ingredients, 435 g
33% OffFree Shipping
Why we love it
- Pure ingredients for pure nutrition.
- High protein to fuel your day.
- Versatile for any recipe.
Main Highlights
- MADE WITH INGREDIENTS YOU NEED, NOTHING YOU DON'T: Only 2 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 25g protein from 100% Whey Protein Isolate to complement your daily routine and support your protein intake
- LOW SUGAR AND LOW FAT: Isopure Unflavoured Whey Isolate delivers high-quality protein with minimal sugar and fat - an effortless way to boost your intake without unecessary extras
- NO ARTIFICIAL FLAVOURS OR SWEETENERS*: Enjoy an unflavoured protein powder with simple ingredients and no artificial flavours, just great-tasting nutrition
- EASY TO BLEND, BAKE, OR COOK: Blend into smoothies, use in baking to make protein brownies, or add to recipes for a protein-rich meal; however you take it, Isopure Whey Protein Isolate fits effortlessly into your lifestyle; *Contains Steviol Glycosides from Stevia, with no artificial sweeteners
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