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Whey protein isolate

Whey protein isolate is a dry, highly protein-enriched dairy ingredient used in drinks, bars and foods requiring concentrated whey protein.

Whey protein isolate — illustrative ingredient image

About Whey protein isolate

Whey protein isolate is a highly protein-enriched dairy ingredient made by separating whey proteins from other whey components. It is sold as a dry powder and is distinct from ordinary whey powder and from whey protein concentrate, which retain different proportions of other solids.

The powder is generally pale cream and mild in flavour, though processing and formulation can affect taste and solubility. It is used in drinks, bars, and other foods where concentrated whey protein is desired. Commercial products may be unflavoured or include added flavours and other ingredients, so the ingredient name alone does not describe every finished product.

Ingredient type
whole food

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Where whey protein isolate appears

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Whey protein isolate nutrition & diet

Whey protein isolate nutritional value

Beverages, Whey protein powder isolate

Per 100 g of the edible portion in the recorded USDA food form.

Calories
359kcal
Protein
58.1g
Carbs
29.1g
Fat
1.2g

Reference values for the displayed USDA form. Varieties, brands and preparation can differ.

Compare unflavoured isolate powder with other forms only when accounting for added ingredients, moisture, and the differing proportions of protein and other whey solids.

Dietary compatibility

  • Vegan
    Not established
  • Vegetarian
    Not established
  • Pescatarian
    Not established
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Vegetarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Pescatarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: USDA FoodData Central — Beverages, Whey protein powder isolate ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .