Impact Whey Protein Powder, Dark Chocolate, 435 g
£19.49 for 435 g at Myprotein. That works out at £1.62 per 25 g protein, which ranks it 109th of the 160 whey protein concentrate products we price across 8 UK retailers.
At one 25 g dose a day, this pack lasts 12 days. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 435 ÷ 29 per serving = 15
- In the pack: 15 × 20 g = 300 g
- £19.49 ÷ 300 g × 25 g = £1.62 per 25 g protein
- A week £1.62 × 7 = £11.37 · a month × 30 = £48.72 · a year × 365 = £592.82
- Amount per serving: stated on the label.
The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.
Cheaper whey protein concentrate
All 160, ranked →
Switching to the Bio-Synergy pack saves £2.49 a month at the same 25 g dose.
Ranked purely by price per 25 g protein. 54 combination products also contain protein powder.
Pack sizes
| Pack | Price | Per dose | A year |
|---|---|---|---|
| 870 g | £32.99 | £1.37 | £501.72 |
| 435 gthis pack | £19.49 | £1.62 | £592.82 |
At one 25 g dose a day, the 870 g pack costs £91.10 less a year than this one.
On the label
- Protein powder · Whey concentrate
- 20 g per serving (stated on the label)
- Pack
- 435 g · 15 servings · 29 g a serving
- Cost per serving
- £1.30 (15 servings in the pack)
More label details
- Claimed on the listing
- vegetarian
- Barcode
- 5059883569307
- Sold by
- Myprotein
- What the listing says
- “435G” · “15servings” · “Per 29g” · “Protein ; 69g ; 20g”
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One 25 g dose is our comparison unit, not a recommendation.
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Filled in from the label’s serving: 29 g.
What you paid
Optional. At Myprotein today: £19.49.
“Order by” allows 3 working days’ delivery from Myprotein and your spare days.
Price history
No price change since 3 October 2026. Checked on 18 days, most recently 20 October 2026.
- Price at every check
- £19.49Myprotein
- First recorded
- £19.493 Oct
- Checked on
- 18 dayssince 3 Oct
- First checked at Myprotein: £19.49
Questions about this product
How much does Myprotein Impact Whey Protein Powder cost per 25 g protein?
£1.62 per 25 g protein, from £19.49 for 435 g at Myprotein, checked on 20 October 2026.
Is it the cheapest whey protein concentrate in the UK?
No, it is 109th of 160. 100% Protein at Protein Works works out at 59p per 25 g protein.
How long does one pack last?
12 days at one 25 g dose. The pack holds 300 g in total.
About Myprotein
Founded 2004 · Manchester, England · Part of THG plc
Myprotein is a sports nutrition brand founded in 2004 by Oliver Cookson and bought in 2011 by The Hut Group, now the London-listed THG plc. It is based in Manchester and is part of THG's nutrition division.
All 558 Myprotein products, priced per doseVisit Myprotein (opens in a new tab)
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