Whey, casein, plant or no protein powder?
Choose the food source, allergen fit and usable format first; a larger front-label number is not automatically the better buy.
Which protein-powder route fits your food preferences and routine?
Start with fit. The label and compliance checks below should change the answer only when they reveal a real trade-off.
Whey powder
01Compare: Milk-derived powder fits your diet and a broad flavour choice matters.
Trade-off: Contains milk and flavours can have different ingredients.
Decisive check: Compare exact flavour, allergens, protein per stated portion and pack size.
Casein powder
02Compare: A thicker milk-derived format is your texture preference.
Trade-off: Contains milk and may mix differently from whey.
Decisive check: Check exact product identity, flavour ingredients and stated portion.
Plant blend
03Compare: A non-dairy protein source is the priority.
Trade-off: Taste, texture, source blend and allergens vary widely.
Decisive check: Identify the plant sources and check the complete flavour-specific label.
No protein powder
04Compare: Ordinary food already covers the practical job or no clear gap exists.
Trade-off: Less convenience for a portable or measured food option.
Decisive check: Name the food-use case before adding a supplement product.
Three checks before checkout
Enough detail to make the choice better informed and clearer, without turning a quick buying decision into a compliance manual.
- 1 Choose source and allergen fit first.
- 2 Compare the same stated portion and exact flavour.
- 3 Do not infer a personal requirement from the pack.
Take the next useful step
Continue to the closest practical comparison or official source.
Why these checks matter in the UK
Compare the food label, ingredients, amount per stated serving, warnings and allergens; do not use the page as medical advice.
Food supplements are regulated as foods rather than medicines.
Great Britain · current
Treat a claim as a constrained label statement, not proof that the product will deliver the outcome for a particular person.
Nutrition and health claims used in Great Britain need an authorised basis and must meet the exact conditions of use.
Great Britain · current
Check the market named on the label and use the matching official source rather than assuming one UK-wide claims register.
Some food-supplement and claims rules differ between Great Britain and Northern Ireland.
Great Britain, Northern Ireland · current
Sources and review boundaries
- Department of Health and Social Care: Food supplements guidance — reviewed 2026-08-03; Food-supplement rules differ between Great Britain and Northern Ireland in some areas.
- Department of Health and Social Care: Great Britain nutrition and health claims register — reviewed 2026-08-03; A listed claim remains subject to its exact conditions of use and the product label.