10 Best whey protein isolates of 2025

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Best Choice

1

VMI Sports

VMI Sports Protolyte 100% Whey Protein Isolate | Electrolytes Plus Enzymes | 22-25 Grams per Serving | Lactose and Gluten Free, Low Fat, Carbs & Sugar (4.6 lb, Mint Chocolate Chip)
9.9

Exceptional

Our Rating
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Value for Money

2

Dymatize
Dymatize ISO 100 Whey Protein Powder with 25g of Hydrolyzed 100% Whey Isolate, Vanilla 5 Pound, Package may vary
Main highlights

Key Features and Benefits
High-quality, hydrolyzed 100% whey protein isolate with 25g protein, 5.5g BCAAs, 2.6g Leucine. Low in sugar, lactose, fat, and gluten-free.

Ideal Use Cases
Perfect for athletes, gym enthusiasts for post-workout recovery or anyone needing high-protein, low-calorie nutrition. Mixes easily with a spoon.

Customer Reviews Highlight
Most praised for its super easy mixing ability, taste, and effectiveness in muscle recovery and building, even with just a cup and spoon.
9.8

Exceptional

Our Rating

9.9
Absorbency

9.7
Sheerness

9.3
Powerful blending
3

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

29% Off
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
- Flavor:Gourmet Vanilla
- Source:Hydrolyzed whey
- Protein:25 grams
- Usage:Fast-digesting protein
- Carbohydrates:N/A
9.6

Exceptional

Our Rating

9.1
quality of ingredients

8.7
Powerful blending

8.2
worth the money
4

Isopure
Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, with Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary)

31% Off
Main highlights

High-Quality Protein Source
Provides 25g of whey protein isolate per serving, supporting muscle growth and weight management with only 100 calories.

Versatile Mixing Options
Ideal for adding to beverages and foods; mixes easily without altering taste or texture.

Clean and Smooth Texture
Praised for its ability to blend smoothly, enhancing drinks without lumps or aftertaste.
Key specs
- Flavor:Unflavored
- Source:Whey protein isolate
- Protein:25g per serving
- Usage:Mix in beverage or food
- Carbohydrates:Zero carbs
9.5

Excellent

Our Rating

9.3
quality of ingredients

8.4
Flexibility

8.0
worth the money
5

Nutricost
Nutricost Whey Protein Isolate (Unflavored) 5LBS
Main highlights

High Protein Content and Value
30 grams of protein per serving with 65 servings per bottle.

Ideal for Post-Workout Supplementation
Quick uptake of protein, perfect for post-workout recovery.

Easily Mixed and Mild Tasting
Praised for easy mixing and mild taste, enhancing versatility.
Key specs
- Flavor:Unflavored
- Source:Whey Protein Isolate
- Protein:30 Grams per serving
- Usage:Instantized, scoop included
- Carbohydrates:N/A
9.4

Excellent

Our Rating

9.5
Powerful blending

9.1
worth the money

9.1
quality of ingredients
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6

NAKED

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

13% Off
9.1

Excellent

Our Rating
7

GRAMMS

GRAMMS Clear Protein Powder 20G Protein for Women & Men | Grass-Fed Whey Isolate, Zero Sugar, Zero Lactose, Non-Bloating, Non-GMO (10 Servings) Strawberry Acai Flavor
9.0

Excellent

Our Rating
8

Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate 1.98 Pound (Packaging May Vary)
Main highlights

High Protein Content
Contains 24g of protein per serving for muscle building.

Versatile Usage
Ideal for pre/post-exercise, between meals, or anytime protein boost.

Customer Praised Taste
Double Rich Chocolate flavor is widely appreciated for its taste.
8.8

Very Good

Our Rating

9.1
simple to consume

9.1
Powerful blending

9.1
quality of ingredients
9

Nutricost
Nutricost Isolate Whey Protein Powder, Vanilla, 5 pounds
Main highlights

Key Features
30g protein/serving, delicious vanilla flavor, non-GMO, gluten and soy free, made in GMP compliant, FDA registered facility, 3rd party tested.

Ideal Use Cases
Perfect for post-workout recovery, meal replacement, or supplementing a high-protein diet for muscle building and weight management.

Customer Praise
Most reviews highlight its great taste, effective results in fitness goals, and appreciate the clean, quality ingredients.
Key specs
- Flavor:Vanilla
- Source:Whey Protein Isolate
- Protein:30 Grams
- Usage:N/A
- Carbohydrates:N/A
8.7

Very Good

Our Rating

9.5
Powerful blending

9.1
quality of ingredients

8.9
worth the money
10

Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound (Packaging May Vary)
Main highlights

High Protein Content
24g of protein per serving supports muscle growth and recovery.

Versatile Usage
Ideal for pre/post-workout, between meals, or anytime protein boost.

Flavor Variety
Customers praise the extensive flavor options, especially Double Rich Chocolate.
8.5

Good

Our Rating

9.1
Powerful blending

9.1
simple to consume

9.1
quality of ingredients

10 Best whey protein isolates of 2025

1

VMI Sports Protolyte 100% Whey Protein Isolate | Electrolytes Plus Enzymes | 22-25 Grams per Serving | Lactose and Gluten Free, Low Fat, Carbs & Sugar (4.6 lb, Mint Chocolate Chip)

How do we rank?

How do we rank?

Analyzing top stores

2

Dymatize ISO 100 Whey Protein Powder with 25g of Hydrolyzed 100% Whey Isolate, Vanilla 5 Pound, Package may vary

9.9

9.7

9.3

3

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

9.1

8.7

8.2

4

Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, with Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary)

9.3

8.4

8.0

5

Nutricost Whey Protein Isolate (Unflavored) 5LBS

9.5

9.1

9.1

6

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

7

GRAMMS Clear Protein Powder 20G Protein for Women & Men | Grass-Fed Whey Isolate, Zero Sugar, Zero Lactose, Non-Bloating, Non-GMO (10 Servings) Strawberry Acai Flavor

8

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate 1.98 Pound (Packaging May Vary)

9.1

9.1

9.1

9

Nutricost Isolate Whey Protein Powder, Vanilla, 5 pounds

9.5

9.1

8.9

10

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound (Packaging May Vary)

9.1

9.1

9.1

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