Impact Diet Whey 5kg Chocolate Mint
£137.99 for 5 kg at Myprotein. That works out at £1.15 per 25 g protein, which ranks it 139th of the 160 whey protein concentrate products we price across 8 UK retailers.
At one 25 g dose a day, this pack lasts 4 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 5000 ÷ 60 per serving = 83.3
- In the pack: 83.3 × 36 g = 3,000 g
- £137.99 ÷ 3,000 g × 25 g = £1.15 per 25 g protein
- A week £1.15 × 7 = £8.05 · a month × 30 = £34.50 · a year × 365 = £419.72
- 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 Reflex Nutrition pack saves £7.73 a month at the same 25 g dose.
Ranked purely by price per 25 g protein. 54 combination products also contain protein powder.
On the label
- Protein powder · Whey concentrate
- 36 g per serving (stated on the label)
- Pack
- 5 kg · 83.3 servings · 60 g a serving
- Cost per serving
- £1.66 (83.3 servings in the pack)
More label details
- Sold by
- Myprotein
- What the listing says
- “Chocolate Mint” · “5kg” · “Per 100g ; Per 60g” · “Protein ; 59g ; 36g” · “Diet Whey”
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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: 60 g.
What you paid
Optional. At Myprotein today: £137.99.
“Order by” allows 3 working days’ delivery from Myprotein and your spare days.
Price history
2 price changes since 23 September 2026. Checked on 19 days, most recently 20 October 2026.
- Lowest recorded
- £129.493 Oct
- Highest recorded
- £137.9913 Oct
- First recorded
- £137.9923 Sept
- Checked on
- 19 dayssince 23 Sept
- Up at Myprotein: £129.49 → £137.99 (+6.6%)
- Down at Myprotein: £137.99 → £129.49 (−6.2%)
- First checked at Myprotein: £137.99
Questions about this product
How much does Myprotein Impact Diet Whey 5kg Chocolate Mint cost per 25 g protein?
£1.15 per 25 g protein, from £137.99 for 5 kg at Myprotein, checked on 20 October 2026.
Is it the cheapest whey protein concentrate in the UK?
No, it is 139th of 160. 100% Protein at Protein Works works out at 59p per 25 g protein.
How long does one pack last?
4 months at one 25 g dose. The pack holds 3,000 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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