February 21, 2026

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10 Best casein proteins of 2026

Save up to 21% off

1

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 4 Pound (Packaging May Vary)

13% Off
9.8

Exceptional

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending
How do we rank?

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Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
2

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 4 Pound (Packaging May Vary)

18% Off
9.7

Exceptional

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending
3

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 2 Pound (Packaging May Vary)
9.6

Exceptional

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending
4

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 2 Pound (Packaging May Vary)

12% Off
9.5

Excellent

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending
5

Dymatize
Dymatize Elite Casein Protein Powder, Chocolate, 100% Micellar Casein, 25g Protein, 5.4g BCAAs, 2.3g Leucine, Slow Absorbing for Overnight Muscle Recovery, 4 lb (50 Servings)
Main highlights

Key Features
Delivers 25g of slow-absorbing micellar casein, 5g of BCAAs, and 2.3g of L-Leucine for prolonged muscle support and recovery.

Ideal Use
Perfect for overnight muscle repair and growth, or for maintaining amino acid levels between meals for sustained muscle building.

Customer Praise
Highly praised for its effective support in muscle recovery and growth during sleep, making it a favorite for fitness enthusiasts.
Key specs
- BCAAs:5 grams
- Protein:25 grams
- Amino Acids:Sustained release
- Carbs:N/A
- Fats:N/A
9.4

Excellent

Our Rating

9.1
Powerful blending

8.7
Flavor

8.7
worth the money
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6

Dymatize
Dymatize Elite Casein Protein Powder, Chocolate, 100% Micellar Casein, 25g Protein, 5.4g BCAAs, 2.3g Leucine, Slow Absorbing for Overnight Muscle Recovery, 4 lb (50 Servings)
Main highlights

Key Features
Delivers 25g of slow-absorbing micellar casein, 5g of BCAAs, and 2.3g of L-Leucine for prolonged muscle support and recovery.

Ideal Use
Perfect for overnight muscle repair and growth, or for maintaining amino acid levels between meals for sustained muscle building.

Customer Praise
Highly praised for its effective support in muscle recovery and growth during sleep, making it a favorite for fitness enthusiasts.
Key specs
- BCAAs:5 grams
- Protein:25 grams
- Amino Acids:Sustained release
- Carbs:N/A
- Fats:N/A
9.3

Excellent

Our Rating

9.1
Powerful blending

8.7
Flavor

8.7
worth the money
7

Nutricost
Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein, Gluten Free, Non-GMO
Main highlights

High Protein Content
Provides 25 grams of protein per serving, ideal for muscle recovery.

Ideal for Nighttime Use
Slow-digesting micellar casein perfect for overnight muscle nourishment.

Customer Praised Flavor
Vanilla flavor is frequently praised for its rich taste.
Key specs
- Date First Available:May 29, 2019
- Manufacturer:Nutricost
- ASIN:B07SH22XS3
- Model Number:NTC233102
- Product Dimensions:5.43 x 4.41 x 8.9 inches
9.1

Excellent

Our Rating
8

Nutricost
Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein, Gluten Free, Non-GMO
Main highlights

High Protein Content
Provides 25 grams of protein per serving, ideal for muscle recovery.

Ideal for Nighttime Use
Slow-digesting micellar casein perfect for overnight muscle nourishment.

Customer Praised Flavor
Vanilla flavor is frequently praised for its rich taste.
Key specs
- Date First Available:May 29, 2019
- Manufacturer:Nutricost
- ASIN:B07SH22XS3
- Model Number:NTC233102
- Product Dimensions:5.43 x 4.41 x 8.9 inches
8.9

Very Good

Our Rating
9

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Creamy Vanilla, 1.81 Pound (Packaging May Vary)

17% Off
8.8

Very Good

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending
10

Optimum Nutrition

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Creamy Vanilla, 1.81 Pound (Packaging May Vary)

21% Off
8.7

Very Good

Our Rating

9.3
Absorbency

9.1
quality of ingredients

8.4
Powerful blending

10 Best casein proteins of 2026

1

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 4 Pound (Packaging May Vary)

9.3

9.1

8.4

How do we rank?

How do we rank?

Analyzing top stores

2

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 4 Pound (Packaging May Vary)

9.3

9.1

8.4

3

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 2 Pound (Packaging May Vary)

9.3

9.1

8.4

4

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 2 Pound (Packaging May Vary)

9.3

9.1

8.4

5

Dymatize Elite Casein Protein Powder, Chocolate, 100% Micellar Casein, 25g Protein, 5.4g BCAAs, 2.3g Leucine, Slow Absorbing for Overnight Muscle Recovery, 4 lb (50 Servings)

9.1

8.7

8.7

6

Dymatize Elite Casein Protein Powder, Chocolate, 100% Micellar Casein, 25g Protein, 5.4g BCAAs, 2.3g Leucine, Slow Absorbing for Overnight Muscle Recovery, 4 lb (50 Servings)

9.1

8.7

8.7

7

Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein, Gluten Free, Non-GMO

8

Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein, Gluten Free, Non-GMO

9

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Creamy Vanilla, 1.81 Pound (Packaging May Vary)

9.3

9.1

8.4

10

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Creamy Vanilla, 1.81 Pound (Packaging May Vary)

9.3

9.1

8.4

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