Impact Whey Isolate Powder, Chocolate Smooth, 450 g
£29.49 for 450 g at Myprotein. That works out at £1.97 per 25 g protein, which ranks it 68th of the 123 whey protein isolate products we price across 6 UK retailers.
At one 25 g dose a day, this pack lasts 15 days. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 450 ÷ 30 per serving = 15
- In the pack: 15 × 25 g = 375 g
- £29.49 ÷ 375 g × 25 g = £1.97 per 25 g protein
- A week £1.97 × 7 = £13.76 · a month × 30 = £58.98 · a year × 365 = £717.59
- 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 isolate
All 123, ranked →
Switching to the Myprotein pack saves 47p a month at the same 25 g dose.
Ranked purely by price per 25 g protein. 53 combination products also contain protein powder.
On the label
- Protein powder · Whey isolate
- 25 g per serving (stated on the label)
- Pack
- 450 g · 15 servings · 30 g a serving
- Cost per serving
- £1.97 (15 servings in the pack)
More label details
- Claimed on the listing
- vegetarian
- Barcode
- 5059883571461
- Sold by
- Myprotein
- What the listing says
- “450G” · “15servings” · “Per 30g” · “Protein ; 83g ; 25g”
Add to your basket
View basketYour basket prices everything you take together: whole packs, delivery included, from as few websites as you like.
One 25 g dose is our comparison unit, not a recommendation.
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Filled in from the label’s serving: 30 g.
What you paid
Optional. At Myprotein today: £29.49.
“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
- £29.49Myprotein
- First recorded
- £29.493 Oct
- Checked on
- 18 dayssince 3 Oct
- First checked at Myprotein: £29.49
Questions about this product
How much does Myprotein Impact Whey Isolate Powder cost per 25 g protein?
£1.97 per 25 g protein, from £29.49 for 450 g at Myprotein, checked on 20 October 2026.
Is it the cheapest whey protein isolate in the UK?
No, it is 68th of 123. Impact Whey Isolate Powder at Myprotein works out at 83p per 25 g protein.
How long does one pack last?
15 days at one 25 g dose. The pack holds 375 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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