Best whey protein for weight loss
On a diet? These whey shakes give you maximum protein with minimal calories.
When losing weight it is all about preserving protein and limiting calories. The best shakes for a cut have a high protein-to-calorie ratio. Isolates often score best here due to their low fat and carb content.

Optimum Nutrition Gold Standard 100% Isolate
Ultra-pure whey isolate with 25g protein per serving. Fast-absorbing, low in fat and sugar.

Gold Standard 100% Isolate

Optimum Nutrition Clear Whey Isolate
Refreshing clear whey isolate with fruity flavors. Light like lemonade, 20g protein per serving.

Clear Whey Isolate

MuscleTech Nitro-Tech
3 flavors
Performance whey with added creatine. Focused on strength and muscle growth.

Nitro-Tech

FitRx PoweRx Whey Protein Isolate Vanilla Bean High Protein Powder
Whey isolate with 26g protein per 30.8g serving, 84% protein by weight. The 153g pack covers 5 servings.

Isopure Zero Carb 100% Whey Protein Isolate Powder
Whey isolate with 25g protein per 31g serving, 81% protein by weight. Zero carbs and 110 calories per serving.

Isopure Zero Carb 100% Pure Whey Isolate Protein Powder
Whey isolate with 25g protein per 31g serving, zero carbs and zero sugar. The 434g tub covers 14 servings.

Nutricost Whey Protein Isolate Powder
Whey isolate with 30g protein per 38g serving, 79% protein by weight. The 2268g pack covers 60 servings.

Whey Protein Isolate Powder

Ascent 100% Whey Protein Powder
Whey isolate with 25g protein per 35g serving. The 1814g tub holds 52 servings and lists 1g sugar.

100% Whey Protein Powder

Legion Athletics Whey+ Whey Protein Isolate Powder
Whey isolate at 81% protein by weight, 22g protein per 27.2g serving. The 816g tub holds 30 servings.

Optimum Nutrition Platinum Hydrowhey
Hydrolyzed whey isolate for maximum absorption. 30g protein per serving, the fastest absorbing whey.

Platinum Hydrowhey

Huel Complete Protein
6 flavors
The world's first nutritionally complete vegan protein powder. Hemp, fava bean, and pea protein blend with a complete amino acid profile. 20g protein per serving, 105 kcal. Gluten-free and plant-based.

Naked Nutrition Naked CASEIN
Micellar casein at 87% protein by weight, 26g protein per 30g serving. The 2268g bag holds 76 servings.

BulkSupplements Casein Protein Powder
Casein powder with 25g protein per 30g serving, 83.33% protein by weight. Listed at 0g fat, 0g carbs and 0g sugar.

Casein Protein Powder

BulkSupplements Casein Protein Powder
Casein powder with 25g protein per 30g serving, 83% protein by weight. Zero fat, carbs and sugar per serving.

Casein Protein Powder

BulkSupplements Casein Protein Powder
Casein powder at 83% protein by weight, 25g per 30g serving. The 99g pack covers 3 servings.

Casein Protein Powder

BulkSupplements Casein Protein Powder
Unflavoured casein with 25g protein per 30g serving and no fat, carbs or sugar. 83% protein by weight.

Casein Protein Powder

Nutricost Casein Protein Powder
Micellar casein with 25g protein per 30g serving, 83% protein by weight. The 2268g pack covers 76 servings.

Casein Protein Powder

Nutricost Casein Protein Powder Vanilla
Vanilla micellar casein with 25g protein per 32g serving at 110 calories. The 907g tub holds 28 servings.

Casein Protein Powder Vanilla

Dymatize ISO100 Hydrolyzed Whey Isolate Protein Powder
Hydrolyzed whey isolate, 25g protein per 30g serving at 83% protein by weight. The 600g tub holds 20 servings.

NOW Foods Soy Protein Powder
Soy protein powder with 20g protein per 24g serving at 90 calories. That comes to 83.33% protein by weight.

Frequently asked questions
Looking for the ideal diet protein?
Take the quiz and discover which protein powder best fits your weight loss goal.
Find your supplement →