Whey concentrate and whey isolate both begin with whey, a milk-derived protein. The practical differences shoppers see are usually the amount of further filtration, the nutrition panel, the ingredient list, taste and price. The front of the pack is only a starting point; the useful comparison happens on the label.
What is whey concentrate?
Whey concentrate retains protein alongside varying amounts of carbohydrate, fat and naturally occurring milk components. It often produces a familiar creamy shake and is commonly used in everyday whey products.
What is whey isolate?
Whey isolate is filtered further. That often results in a higher proportion of protein by weight, but the exact figure depends on the finished product and flavour. Do not assume every isolate has the same nutrition values: compare protein per 100 g, energy per 100 g and the stated serving size.
Five useful label checks
- Protein per 100 g: the fairest way to compare differently sized servings.
- Protein per serving: calculate this from the stated scoop or serving weight.
- Ingredients: blends may contain concentrate, isolate or both.
- Allergens: whey comes from milk; check the emphasised allergen declaration.
- Flavour-specific values: chocolate, biscuit and fruit flavours can differ slightly.
Which should you choose?
Choose from the facts that matter to you: nutrition values, ingredients, allergens, flavour, texture and price. Our product pages publish the maker's stated protein and energy figures, and our comparison table puts the range side by side.