September 14, 2025

Advertising Disclosure

10 Best whey protein isolates of 2025

Save up to 36% off

Best Choice

1

Sports Research
Sports Research Whey Protein - Sports Nutrition Whey Isolate Protein Powder for Lean Muscle Building & Workout Recovery - 5 lb Bag Bulk Protein Powder 25g per Serving - Dutch Chocolate, 56 Servings
Main highlights

High Protein Content
Each serving offers 25g of protein and 6.9g of BCAAs, supporting lean muscle growth.

Versatile Usage
Perfect for shakes, smoothies, baking, or as a protein boost in coffee.

Excellent Mixability
Highly praised for its smooth texture and lack of graininess.
9.9

Exceptional

Our Rating

9.5
Flavor

9.3
worth the money

9.3
quality of ingredients
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

NOW Foods
NOW Foods Sports Nutrition, Whey Protein Isolate, 25 g With BCAAs, Unflavored Powder, 5-Pound

36% Off
Main highlights

High-Quality Protein with BCAAs
NOW Sports Whey Protein Isolate offers 25g of bioavailable protein and BCAAs per serving, ensuring purity and effectiveness for all athletic levels.

Ideal for Smoothies and Cooking
Perfect for smoothies or cooking, this unflavored powder enhances protein intake without changing taste, suitable for fitness and culinary enthusiasts.

Praised for Seamless Blending
Customers love its ability to blend smoothly into drinks and recipes, leaving no gritty texture or aftertaste.
Key specs
- Source:Whey Protein Isolate
- Protein:25 g per serving
- Flavor:Unflavored
- Usage:Mix in smoothie
- BCAAs:N/A
9.6

Exceptional

Our Rating

8.0
quality of ingredients

8.0
Powerful blending

8.0
Flavor
3

Optimum Nutrition
Optimum Nutrition Gold Standard 100% Isolate, Protein Powder, Chocolate Bliss, 3 Pounds, 44 Servings. Whey Protein Isolate (Packaging May Vary)

19% Off
Main highlights

Key Features and Benefits
High-quality, hydrolyzed whey protein isolate with 25g protein, 5.5g BCAAs, only 1g carbs, ensuring muscle growth and quick recovery.

Ideal Use Cases
Perfect for athletes, bodybuilders, and fitness enthusiasts seeking rapid muscle recovery, post-workout nutrition, or a low-carb protein source.

Customer Reviews Summary
Most reviews praise its easy digestibility, effectiveness in muscle recovery, and minimal carbohydrate content.
Key specs
- Source:Whey Protein Isolate
- Protein:25 Grams per Serving
- Flavor:N/A
- Usage:N/A
- BCAAs:5.5 Grams per Serving
9.4

Excellent

Our Rating

9.3
quality of ingredients

9.1
Powerful blending

8.9
Flavor
4

Dymatize
Dymatize ISO100 Whey Protein Powder Isolate, Gourmet Vanilla, 25g of Protein, 20 Servings, 5.5g BCAAs, Less Than 120 Cal., Gluten Free, 1g Fat, 1g Sugar, 2g Carb
Main highlights

Fast Absorbing Hydrolyzed Protein
Scientifically formulated with fast-digesting hydrolyzed whey protein isolate for quick muscle recovery.

Ideal for Post-Workout
Perfect for post-workout recovery, providing 25g protein and 5.5g BCAAs per serving.

Smooth Texture Praised
Customers love its smooth, creamy texture and easy mixability.
Key specs
- Source:Hydrolyzed whey
- Protein:25 grams
- Flavor:Gourmet Vanilla
- Usage:Fast-digesting protein
- BCAAs:5.5 grams
9.1

Excellent

Our Rating

9.1
quality of ingredients

8.7
Powerful blending

8.2
worth the money
5

NAKED

NAKED Whey Isolate Protein - Only 2 Ingredients, 30g Grass-Fed Protein, Unflavored, Undenatured, No GMO, No Soy, Gluten-Free, No Preservatives - 28 Servings
9.0

Excellent

Our Rating
See Today’s Deals & Prices
6

Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Vanilla Ice Cream, 2 Pound (Packaging May Vary)

26% Off
Main highlights

High Protein Content
Provides 24 grams of blended protein per serving, supporting muscle growth and recovery.

Ideal for Fitness Enthusiasts
Perfect for athletes and fitness enthusiasts seeking muscle recovery and lean mass support.

Praised for Taste
Customers love the smooth, creamy taste of Vanilla Ice Cream flavor.
Key specs
- Source:Whey protein
- Protein:24 grams
- Flavor:Double rich chocolate
- Usage:Support lean muscle mass
- BCAAs:Over 5 grams
8.9

Very Good

Our Rating

9.9
Flexibility

9.3
Powerful blending

9.3
quality of ingredients
7

Isopure
Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 3 Lbs, 47 Servings (Packaging May Vary)

15% Off
Main highlights

High_Quality_Protein_Source
Provides 25g of whey protein isolate per serving, supporting muscle growth and maintenance.

Versatile_Usage
Ideal for mixing into coffee, water, or smoothies for a convenient protein boost.

Smooth_Texture_and_Taste
Praised for its tasteless, smooth blend with no clumps or aftertaste.
8.8

Very Good

Our Rating

9.3
quality of ingredients

8.4
Flexibility

8.0
worth the money
8

Transparent Labs
Transparent Labs Grass-Fed Whey Protein Isolate - Naturally Flavored, Gluten Free Whey Protein Powder with 28g of Protein per Serving & 9 Amino Acids - 30 Servings, Milk Chocolate

10% Off
Main highlights

High Protein Content
Transparent Labs offers 28g of protein per serving, sourced from grass-fed American cattle, ensuring high protein-by-weight ratio with minimal sugar or fat.

Ideal for Muscle Recovery
Perfect for enhancing recovery and promoting muscle growth, this protein is light on the stomach and easily digestible.

Customer Praised Flavor
Customers love the milk chocolate flavor, noting its smooth taste and lack of overwhelming sweetness.
Key specs
- Source:100% grass-fed whey
- Protein:28g per serving
- Flavor:Naturally flavored
- Usage:Enhance recovery, increase strength
- BCAAs:Contains all nine
8.6

Very Good

Our Rating
9

NOW Foods
NOW Foods Sports Nutrition, Whey Protein Isolate, 25 g With BCAAs, Unflavored Powder, 1.2-Pound

29% Off
Main highlights

High-Quality Protein with BCAAs
NOW Sports Whey Protein Isolate offers 25g of bioavailable protein with BCAAs, ensuring effective muscle repair and growth.

Perfect for Athletes and Fitness Enthusiasts
Ideal for post-workout recovery, supporting muscle repair and enhancing performance for athletes and gym-goers.

Mixes Easily and Tastes Good
Praised for its easy mixing and decent taste, making it versatile for smoothies and shakes.
Key specs
- Source:Whey
- Protein:25 g per serving
- Flavor:Unflavored
- Usage:Mix into smoothie
- BCAAs:Whey Protein Isolate
8.5

Good

Our Rating

9.7
Powerful blending

9.1
quality of ingredients

8.2
worth the money
10

Nutricost
Nutricost Whey Protein Powder, Unflavored, 5 pounds - from Whey Protein Concentrate
Main highlights

Pure Whey Protein Concentrate
Undenatured, unflavored, and pure whey protein concentrate.

Versatile Use in Smoothies
Ideal for smoothies, shakes, or as a protein boost.

Mixes Easily
Highly praised for easy mixing and smooth texture.
Key specs
- Source:Whey
- Protein:Whey Protein Concentrate
- Flavor:Unflavored
- Usage:N/A
- BCAAs:N/A
8.2

Good

Our Rating

9.9
Powerful blending

9.1
worth the money

9.1
Sheerness

10 Best whey protein isolates of 2025

1

Sports Research Whey Protein - Sports Nutrition Whey Isolate Protein Powder for Lean Muscle Building & Workout Recovery - 5 lb Bag Bulk Protein Powder 25g per Serving - Dutch Chocolate, 56 Servings

9.5

9.3

9.3

How do we rank?

How do we rank?

Analyzing top stores

2

NOW Foods Sports Nutrition, Whey Protein Isolate, 25 g With BCAAs, Unflavored Powder, 5-Pound

8.0

8.0

8.0

3

Optimum Nutrition Gold Standard 100% Isolate, Protein Powder, Chocolate Bliss, 3 Pounds, 44 Servings. Whey Protein Isolate (Packaging May Vary)

9.3

9.1

8.9

4

Dymatize ISO100 Whey Protein Powder Isolate, Gourmet Vanilla, 25g of Protein, 20 Servings, 5.5g BCAAs, Less Than 120 Cal., Gluten Free, 1g Fat, 1g Sugar, 2g Carb

9.1

8.7

8.2

5

NAKED Whey Isolate Protein - Only 2 Ingredients, 30g Grass-Fed Protein, Unflavored, Undenatured, No GMO, No Soy, Gluten-Free, No Preservatives - 28 Servings

6

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Vanilla Ice Cream, 2 Pound (Packaging May Vary)

9.9

9.3

9.3

7

Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 3 Lbs, 47 Servings (Packaging May Vary)

9.3

8.4

8.0

8

Transparent Labs Grass-Fed Whey Protein Isolate - Naturally Flavored, Gluten Free Whey Protein Powder with 28g of Protein per Serving & 9 Amino Acids - 30 Servings, Milk Chocolate

9

NOW Foods Sports Nutrition, Whey Protein Isolate, 25 g With BCAAs, Unflavored Powder, 1.2-Pound

9.7

9.1

8.2

10

Nutricost Whey Protein Powder, Unflavored, 5 pounds - from Whey Protein Concentrate

9.9

9.1

9.1

Sign up and get exclusive special deals