Best Gold Standard Whey Protein of 2025

Last updated on 04/10/2025

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Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Delicious Strawberry Flavour, 151 Servings, 4.53 kg

Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Delicious Strawberry Flavour, 151 Servings, 4.53 kg

Optimum Nutrition

Why we love it

Supports muscle gain and recovery.
Variety of flavors and sizes.
Easy and convenient usage.

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

9.8

Exceptional

9.8

Exceptional

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Delicious Strawberry Flavour, 151 Servings, 4.53 kg

Why we love it

Supports muscle gain and recovery.
Variety of flavors and sizes.
Easy and convenient usage.

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

Value for Money

Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Super Strawberry Flavour, 40 Servings, 1.6 kg

Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Super Strawberry Flavour, 40 Servings, 1.6 kg

Optimum Nutrition

6% OffFree Shipping

Why we love it

Supports strength training and fitness.
Fastest digesting protein included.
Purest form of Whey.

Main Highlights

Pure hydrolysed whey protein isolate powder designed to support your strength training, CrossFit routine, gym workout, and fitness sessions
Each serving contains 30 g of the FASTEST DIGESTING PROTEIN for the growth and maintenance of muscle mass*
Carefully formulated with 9.5 g of both naturally occurring BCAAs and added amino acids
Hydrolysed whey protein isolates deliver the PUREST FORM OF WHEY PROTEIN with minimal amounts of fat and sugars; ONLY 1 g OF SUGARS OR LESS and no more than 0.5 g of fat per serving
An EASY TO MIX, the any-time protein formula that provides an extra source of protein throughout the day, in three varieties: Milk Chocolate, Super Strawberry, and Vanilla Bean
For a tasty protein shake add 1 scoop of the whey isolate to 260 ml of water and shake, stir, or blend well
*Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012

Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Super Strawberry Flavour, 40 Servings, 1.6 kg

6% OffFree Shipping

Why we love it

Supports strength training and fitness.
Fastest digesting protein included.
Purest form of Whey.

Main Highlights

Pure hydrolysed whey protein isolate powder designed to support your strength training, CrossFit routine, gym workout, and fitness sessions
Each serving contains 30 g of the FASTEST DIGESTING PROTEIN for the growth and maintenance of muscle mass*
Carefully formulated with 9.5 g of both naturally occurring BCAAs and added amino acids
Hydrolysed whey protein isolates deliver the PUREST FORM OF WHEY PROTEIN with minimal amounts of fat and sugars; ONLY 1 g OF SUGARS OR LESS and no more than 0.5 g of fat per serving
An EASY TO MIX, the any-time protein formula that provides an extra source of protein throughout the day, in three varieties: Milk Chocolate, Super Strawberry, and Vanilla Bean
For a tasty protein shake add 1 scoop of the whey isolate to 260 ml of water and shake, stir, or blend well
*Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012

Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Extreme Milk Chocolate, 71 Servings, 2.27kg, Packaging May Vary

Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Extreme Milk Chocolate, 71 Servings, 2.27kg, Packaging May Vary

Optimum Nutrition

14% OffFree Shipping

Why we love it

Supports fitness journey from start.
Quick absorption for muscle gain.
Variety of sizes, 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

Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Extreme Milk Chocolate, 71 Servings, 2.27kg, Packaging May Vary

14% OffFree Shipping

Why we love it

Supports fitness journey from start.
Quick absorption for muscle gain.
Variety of sizes, 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

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

Optimum Nutrition

23% OffFree Shipping

Why we love it

Supports muscle growth and repair.
Fortified with essential minerals.
Low sugar, high protein.

Main Highlights

SLOW-DIGESTING PROTEIN powder FORTIFIED with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis
The ready-to-mix powder provides a source of slow digesting protein to support muscle growth and repair*
Each serving contains 24 g of premium micellar casein protein that provides your body with a slow and steady FLOW OF AMINO ACIDS OVERNIGHT
This protein powder contains 10 g of naturally occurring essential amino acids with low sugar in each serving
A PROTEIN source for athletes & fitness enthusiasts; to enjoy, add 1 heaped scoop to 300 ml of cold water and stir, shake or blend until dissolved
*Protein contributes to the growth and maintenance of muscle mass. To be used in the framework of a varied and balanced diet and healthy lifestyle. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

23% OffFree Shipping

Why we love it

Supports muscle growth and repair.
Fortified with essential minerals.
Low sugar, high protein.

Main Highlights

SLOW-DIGESTING PROTEIN powder FORTIFIED with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis
The ready-to-mix powder provides a source of slow digesting protein to support muscle growth and repair*
Each serving contains 24 g of premium micellar casein protein that provides your body with a slow and steady FLOW OF AMINO ACIDS OVERNIGHT
This protein powder contains 10 g of naturally occurring essential amino acids with low sugar in each serving
A PROTEIN source for athletes & fitness enthusiasts; to enjoy, add 1 heaped scoop to 300 ml of cold water and stir, shake or blend until dissolved
*Protein contributes to the growth and maintenance of muscle mass. To be used in the framework of a varied and balanced diet and healthy lifestyle. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012

Optimum Nutrition Gold Standard Vanilla Whey Powder, 1.62kg

Optimum Nutrition Gold Standard Vanilla Whey Powder, 1.62kg

Optimum Nutrition

4% Off

Main Highlights

Optimum Nutrition Gold Standard Vanilla Whey Powder, 1.62kg

Optimum Nutrition Gold Standard Vanilla Whey Powder, 1.62kg

4% Off

Main Highlights

Optimum Nutrition Gold Standard Vanilla Whey Powder, 1.62kg

Optimum 296134 nutri Gold Standard Whey Chocolate, 1.67 kg

Optimum 296134 nutri Gold Standard Whey Chocolate, 1.67 kg

Optimum

Why we love it

High-quality Whey Protein Isolate.
Packed with essential amino acids.
Supports muscle recovery and growth.

Main Highlights

Whey protein isolate (WPI) Main ingredient
Whey protein micro fractions from whey protein isolates & ultra-filtered whey protein concentrate
Over 4 grams of Glutamine & glutamic acid in each Serving
More than 5 grams of the naturally occurring branched chain amino acids (BCAAs) leucine, Isoleucine, and Valine in each Serving
The "gold Standard" For protein quality

Optimum 296134 nutri Gold Standard Whey Chocolate, 1.67 kg

Why we love it

High-quality Whey Protein Isolate.
Packed with essential amino acids.
Supports muscle recovery and growth.

Main Highlights

Whey protein isolate (WPI) Main ingredient
Whey protein micro fractions from whey protein isolates & ultra-filtered whey protein concentrate
Over 4 grams of Glutamine & glutamic acid in each Serving
More than 5 grams of the naturally occurring branched chain amino acids (BCAAs) leucine, Isoleucine, and Valine in each Serving
The "gold Standard" For protein quality

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 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

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

Optimum Nutrition 100 Percent Whey Gold Standard Sports Supplements, 907 g, Delicious Strawberry

Optimum Nutrition 100 Percent Whey Gold Standard Sports Supplements, 907 g, Delicious Strawberry

Optimum Nutrition

Free Shipping

Why we love it

High protein content per serving.
Low in carbohydrates.
Multiple delicious flavor options.

Main Highlights

Optimum Nutrition Gold Standard 100% Premium Whey Protein Isolate and Whey Protein Concentrate
One serving in the morning and/or a serving after workout and your body gets everything necessary for repair of muscle fibers, regeneration of muscles and building muscle mass
One portion of 30, 2 g contains approx. 24 g of proteins, only 1.8 g of carbohydrates and only 1.1 g of fat, together approx. 113 calories, depending on taste small variations
Pack contains 907 g, enough for 30 portions of approx. 30, 2 g
Available in 5 different pack sizes and in the most popular sizes up to 12 different flavours

Optimum Nutrition 100 Percent Whey Gold Standard Sports Supplements, 907 g, Delicious Strawberry

Free Shipping

Why we love it

High protein content per serving.
Low in carbohydrates.
Multiple delicious flavor options.

Main Highlights

Optimum Nutrition Gold Standard 100% Premium Whey Protein Isolate and Whey Protein Concentrate
One serving in the morning and/or a serving after workout and your body gets everything necessary for repair of muscle fibers, regeneration of muscles and building muscle mass
One portion of 30, 2 g contains approx. 24 g of proteins, only 1.8 g of carbohydrates and only 1.1 g of fat, together approx. 113 calories, depending on taste small variations
Pack contains 907 g, enough for 30 portions of approx. 30, 2 g
Available in 5 different pack sizes and in the most popular sizes up to 12 different flavours

Applied Nutrition Critical Whey Protein Powder 2kg - High Protein Powder, Protein Milkshake, Muscle Building Supplement with BCAAs & Glutamine (2kg - 61 Servings) (White Choco Hazelnut)

Applied Nutrition Critical Whey Protein Powder 2kg - High Protein Powder, Protein Milkshake, Muscle Building Supplement with BCAAs & Glutamine (2kg - 61 Servings) (White Choco Hazelnut)

Applied Nutrition

7% Off

Why we love it

Promotes muscle building and maintenance.
Quick and easy preparation.
Assures highest quality for athletes.

Main Highlights

24G PROTEIN PER SERVING – Critical Whey delivers 24g of high-quality protein per shake to support lean muscle growth, repair, and recovery as part of your fitness journey.
ADVANCED WHEY BLEND – A fast-absorbing formula made with whey protein concentrate, isolate, and hydrolysed whey for both rapid and sustained release protein.
RICH IN BCAAs & GLUTAMINE – Naturally high in essential amino acids to aid recovery, reduce fatigue, and support endurance.
INFORMED TESTED FOR QUALITY – Every flavour is Informed Protein Tested, with selected flavours (Strawberry Milkshake, Chocolate Milkshake, Vanilla Ice Cream) also Informed Sport Certified for athletes.
CAFFEINE FLAVOURS AVAILABLE – Caramel Latte and Frappuccino combine 24g protein with added caffeine for extra focus and energy – perfect for mornings or busy days. DELICIOUS & EASY TO MIX – Available in a wide range of great-tasting flavours, each 825g tub provides 25 smooth, easy-mixing shakes for convenient daily protein support.

Applied Nutrition Critical Whey Protein Powder 2kg - High Protein Powder, Protein Milkshake, Muscle Building Supplement with BCAAs & Glutamine (2kg - 61 Servings) (White Choco Hazelnut)

7% Off

Why we love it

Promotes muscle building and maintenance.
Quick and easy preparation.
Assures highest quality for athletes.

Main Highlights

24G PROTEIN PER SERVING – Critical Whey delivers 24g of high-quality protein per shake to support lean muscle growth, repair, and recovery as part of your fitness journey.
ADVANCED WHEY BLEND – A fast-absorbing formula made with whey protein concentrate, isolate, and hydrolysed whey for both rapid and sustained release protein.
RICH IN BCAAs & GLUTAMINE – Naturally high in essential amino acids to aid recovery, reduce fatigue, and support endurance.
INFORMED TESTED FOR QUALITY – Every flavour is Informed Protein Tested, with selected flavours (Strawberry Milkshake, Chocolate Milkshake, Vanilla Ice Cream) also Informed Sport Certified for athletes.
CAFFEINE FLAVOURS AVAILABLE – Caramel Latte and Frappuccino combine 24g protein with added caffeine for extra focus and energy – perfect for mornings or busy days. DELICIOUS & EASY TO MIX – Available in a wide range of great-tasting flavours, each 825g tub provides 25 smooth, easy-mixing shakes for convenient daily protein support.

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

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

Optimum Nutrition

18% 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.

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

18% 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.

We scanned 1162 products

We reviewed these offers relevant to the Gold Standard Whey Protein 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, Optimum, Applied Nutrition, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Gold Standard Whey Protein in the market, we considered we took a deep dive into 5811 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 Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Delicious Strawberry Flavour, 151 Servings, 4.53 kg. We love many things about this product by Optimum Nutrition. What sets it apart from the competition is Supports muscle gain and recovery. , Variety of flavors and sizes. , Easy and convenient usage.
The best value product for most shoppers and where user satisfaction is continuously the highest is Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Super Strawberry Flavour, 40 Servings, 1.6 kg by Optimum Nutrition based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Gold Standard Whey Protein and the best cost-to-value ratio is Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kgat Optimum Nutrition with a 23% discount.
Our list of the best Gold Standard Whey Protein 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.