Best Natural Whey Protein Powder Isolate of 2025

Last updated on 02/10/2025
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1
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
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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
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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9.7
Exceptional
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9.7
Exceptional
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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Value for Money
2
LEGION Whey+ Whey Isolate Protein Powder from Grass Fed Cows - Low Carb, Low Calorie, Non-GMO, Lactose Free, Gluten Free, Sugar Free, All Natural Protein Isolate, 30 Servings (Vanilla)
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LEGION Whey+ Whey Isolate Protein Powder from Grass Fed Cows - Low Carb, Low Calorie, Non-GMO, Lactose Free, Gluten Free, Sugar Free, All Natural Protein Isolate, 30 Servings (Vanilla)
Legion
Free Shipping
Why we love it
  • Purest form of Whey Protein.
  • Produced from quality Irish milk.
  • No artificial ingredients used.
Main Highlights
  • Get our naturally sweetened and flavored whey isolate protein powder made with hormone-free Truly Grass Fed milk from Ireland that’s gentle on the stomach, easy to digest, and doesn’t cause bloating or discomfort.
  • 22 grams of grass-fed protein per serving with 12 grams of essential amino acids, 5.5 grams of BCAAs, and no lactose or added sugars.
  • 100% whey protein isolate with no artificial sweeteners, flavors, food dyes, fillers, or other unnecessary junk. While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health.
  • Clean whey protein powder and transparent label that shows exactly what’s in every serving of our protein powder isolate and what’s not (no proprietary blends or hidden ingredients).
  • Tested for purity and potency in an ISO 17025 accredited third-party lab, and independently certified to contain no contaminants or banned substances by Labdoor. Every bag of our Whey+ protien powder is guaranteed to provide exactly what the label claims and nothing else.
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9.5
Superb
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9.5
Superb
Legion
LEGION Whey+ Whey Isolate Protein Powder from Grass Fed Cows - Low Carb, Low Calorie, Non-GMO, Lactose Free, Gluten Free, Sugar Free, All Natural Protein Isolate, 30 Servings (Vanilla)
Free Shipping
Why we love it
  • Purest form of Whey Protein.
  • Produced from quality Irish milk.
  • No artificial ingredients used.
Main Highlights
  • Get our naturally sweetened and flavored whey isolate protein powder made with hormone-free Truly Grass Fed milk from Ireland that’s gentle on the stomach, easy to digest, and doesn’t cause bloating or discomfort.
  • 22 grams of grass-fed protein per serving with 12 grams of essential amino acids, 5.5 grams of BCAAs, and no lactose or added sugars.
  • 100% whey protein isolate with no artificial sweeteners, flavors, food dyes, fillers, or other unnecessary junk. While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health.
  • Clean whey protein powder and transparent label that shows exactly what’s in every serving of our protein powder isolate and what’s not (no proprietary blends or hidden ingredients).
  • Tested for purity and potency in an ISO 17025 accredited third-party lab, and independently certified to contain no contaminants or banned substances by Labdoor. Every bag of our Whey+ protien powder is guaranteed to provide exactly what the label claims and nothing else.
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3
Impact Whey Isolate Protein Powder, Natural Chocolate
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Impact Whey Isolate Protein Powder, Natural Chocolate
Myprotein
4% OffFree Shipping
Why we love it
  • Great for muscle growth upkeep.
  • Impressively low in fat, carbs.
  • Packed with 90% protein ratio.
Main Highlights
  • One of the purest whey protein powder
  • Made from milk from pasture cows
  • Helps to build and repair new muscle
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9.4
Superb
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9.4
Superb
Myprotein
Impact Whey Isolate Protein Powder, Natural Chocolate
4% OffFree Shipping
Why we love it
  • Great for muscle growth upkeep.
  • Impressively low in fat, carbs.
  • Packed with 90% protein ratio.
Main Highlights
  • One of the purest whey protein powder
  • Made from milk from pasture cows
  • Helps to build and repair new muscle
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4
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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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
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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9.2
Superb
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9.2
Superb
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
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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5
Nutristrength Unflavoured Whey Protein Isolate Powder | Pure Whey Protein Isolate Powder 1kg with Sunflower Lecithin | Made in The UK (1kg)
Nutristrength Unflavoured Whey Protein Isolate Powder | Pure Whey Protein Isolate Powder 1kg with Sunflower Lecithin | Made in The UK (1kg)
Nutristrength
Why we love it
  • High quality, high protein.
  • Great taste and versatile.
  • No artificial additives.
Main Highlights
  • High quality and high protein with 90% protein yield, sweetened with natural sweeteners
  • Great tasting - simply mix with 200ml of water or in protein balls, smoothies or porridge
  • Whey derived from grass-fed cows, high in calcium & made in the UK
  • A source of essential amino acids with no artificial additives or ingredients
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9.1
Superb
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9.1
Superb
Nutristrength
Nutristrength Unflavoured Whey Protein Isolate Powder | Pure Whey Protein Isolate Powder 1kg with Sunflower Lecithin | Made in The UK (1kg)
Why we love it
  • High quality, high protein.
  • Great taste and versatile.
  • No artificial additives.
Main Highlights
  • High quality and high protein with 90% protein yield, sweetened with natural sweeteners
  • Great tasting - simply mix with 200ml of water or in protein balls, smoothies or porridge
  • Whey derived from grass-fed cows, high in calcium & made in the UK
  • A source of essential amino acids with no artificial additives or ingredients
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6
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
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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
Free Shipping
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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9.1
Superb
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9.1
Superb
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
Free Shipping
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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7
PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK
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PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK
PINK SUN
Free Shipping
Why we love it
  • Pure, certified organic protein.
  • Promotes glutathione production.
  • Perfect for vegetarians.
Main Highlights
  • CERTIFIED ORGANIC, 100% pure, undenatured whey protein concentrate powder 1kg
  • Unflavoured natural taste - no additives, no added sugar or artificial sweeteners - Make your own delicious high protein creamy milkshakes
  • From grass-fed, rBGH hormone-free organic cows' milk with 80% protein
  • Contains essential branch chain amino acids (BCAA) and immunoglobulins to assist in glutathione production
  • Certified organic by the Soil Association - Gluten free, soy free, suitable for vegetarian and wholefood diets
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9.1
Superb
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9.1
Superb
PINK SUN
PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK
Free Shipping
Why we love it
  • Pure, certified organic protein.
  • Promotes glutathione production.
  • Perfect for vegetarians.
Main Highlights
  • CERTIFIED ORGANIC, 100% pure, undenatured whey protein concentrate powder 1kg
  • Unflavoured natural taste - no additives, no added sugar or artificial sweeteners - Make your own delicious high protein creamy milkshakes
  • From grass-fed, rBGH hormone-free organic cows' milk with 80% protein
  • Contains essential branch chain amino acids (BCAA) and immunoglobulins to assist in glutathione production
  • Certified organic by the Soil Association - Gluten free, soy free, suitable for vegetarian and wholefood diets
Show More
8
Myprotein Clear Whey Isolate Protein Powder - Vimto - 500g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
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Myprotein Clear Whey Isolate Protein Powder - Vimto - 500g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
Myprotein
Why we love it
  • Lightweight for easy portability.
  • Convenient pouch packaging.
  • Ideal for travel.
Main Highlights
  • Item weight : 1.1 pounds
  • Package type name : Pouch
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9.0
Superb
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9.0
Superb
Myprotein
Myprotein Clear Whey Isolate Protein Powder - Vimto - 500g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
Why we love it
  • Lightweight for easy portability.
  • Convenient pouch packaging.
  • Ideal for travel.
Main Highlights
  • Item weight : 1.1 pounds
  • Package type name : Pouch
Show More
9
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Unflavoured, 30 Servings, 900 g
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Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Unflavoured, 30 Servings, 900 g
Optimum Nutrition
18% OffFree Shipping
Why we love it
  • Supports muscle gain and recovery.
  • Low in sugar and fat.
  • Taste variety and easy preparation.
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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8.9
Excellent
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8.9
Excellent
Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Unflavoured, 30 Servings, 900 g
18% OffFree Shipping
Why we love it
  • Supports muscle gain and recovery.
  • Low in sugar and fat.
  • Taste variety and easy preparation.
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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10
Vilgain® Whey Protein Powder, Grass Fed | 100% Pure Whey Protein Powder | Fast Muscle Recovery and Building | Natural Taste | Premium Quality Powder (1000g, Unflavoured)
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Vilgain® Whey Protein Powder, Grass Fed | 100% Pure Whey Protein Powder | Fast Muscle Recovery and Building | Natural Taste | Premium Quality Powder (1000g, Unflavoured)
Vilgain
Free Shipping
Why we love it
  • Natural and high-quality ingredients.
  • Supports muscle growth effectively.
  • Great taste without extra calories.
Main Highlights
  • The first protein of 100% natural origin: premium protein powder made from high-quality ingredients without additional frills. It is rich in highly usable protein, including BCAAs that support muscle growth and retention.
  • From the milk of free-range cows: the cows are fed with grass for at least 10 months a year. As a result, it has a cheaper fatty acid composition than the milk of cows that receive compound feed.
  • Maximum ease of use: Whey protein has a similar bioavailability to meat and is therefore best suited for the human body. It has excellent digestibility and contains a high proportion of essential amino acids.
  • Good macronutrient ratio: Our protein powder has less than 125 kcal per serving, is naturally protein rich and contains little sugar and fat*, making it a great aid for a simple, high-quality protein replenishment.
  • Natural sweetener from stevia leaves: the stevia plant allows us to produce a high-quality sweetener with steviol glycosides. They have no effect on blood sugar levels, are 200-300 times sweeter than sugar and are considered a safe calorie free sweeteners for our whey protein powder. Note: measuring spoon not included
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8.7
Excellent
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8.7
Excellent
Vilgain
Vilgain® Whey Protein Powder, Grass Fed | 100% Pure Whey Protein Powder | Fast Muscle Recovery and Building | Natural Taste | Premium Quality Powder (1000g, Unflavoured)
Free Shipping
Why we love it
  • Natural and high-quality ingredients.
  • Supports muscle growth effectively.
  • Great taste without extra calories.
Main Highlights
  • The first protein of 100% natural origin: premium protein powder made from high-quality ingredients without additional frills. It is rich in highly usable protein, including BCAAs that support muscle growth and retention.
  • From the milk of free-range cows: the cows are fed with grass for at least 10 months a year. As a result, it has a cheaper fatty acid composition than the milk of cows that receive compound feed.
  • Maximum ease of use: Whey protein has a similar bioavailability to meat and is therefore best suited for the human body. It has excellent digestibility and contains a high proportion of essential amino acids.
  • Good macronutrient ratio: Our protein powder has less than 125 kcal per serving, is naturally protein rich and contains little sugar and fat*, making it a great aid for a simple, high-quality protein replenishment.
  • Natural sweetener from stevia leaves: the stevia plant allows us to produce a high-quality sweetener with steviol glycosides. They have no effect on blood sugar levels, are 200-300 times sweeter than sugar and are considered a safe calorie free sweeteners for our whey protein powder. Note: measuring spoon not included
Show More

We scanned 280 products

We reviewed these offers relevant to the Natural Whey Protein Powder Isolate 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 Optimum Nutrition, Legion, Myprotein, PINK SUN, Nutristrength, NXT Nutrition, Vilgain, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Natural Whey Protein Powder Isolate in the market, we considered we took a deep dive into 1401 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: