Which Impact Whey size is usually cheapest?

Larger bags are often cheaper per 100g, but promotions and flavour stock can change the best option.

Do Impact Whey flavours cost the same?

Not always. Some flavours can differ in price, size availability or discount eligibility.

•Compare all UK protein powder prices in one place•

Prices differ by flavour and size. All Impact Whey variants in one place so finding the cheapest current option is straightforward.

Live prices189 products1 retailersUpdated 4 Jun 2026

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How much protein do you want per day from powders?

Protein target

g / day

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