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MyproteinSports & performance

Impact Whey Protein + Collagen, Chocolate, 3.75 kg

£128.99 for 3.75 kg at Myprotein. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 25 g protein£1.07One 25 g dose is our comparison unit for protein powder. It is not a recommendation.
A day£1.07
A week£7.52
A month£32.25
A year£392.34

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

Protein powder

  • Servings: 3750 ÷ 25 per serving = 150
  • In the pack: 150 × 20 g = 3,000 g
  • £128.99 ÷ 3,000 g × 25 g = £1.07 per 25 g protein
  • A week £1.07 × 7 = £7.52 · a month × 30 = £32.25 · a year × 365 = £392.34
  • Amount per serving: stated on the label.

Collagen

  • Servings: 3750 ÷ 25 per serving = 150
  • In the pack: 150 × 10 g = 1,500 g
  • £128.99 ÷ 1,500 g × 10 g = 86p per 10 g
  • A week 86p × 7 = £6.02 · a month × 30 = £25.80 · a year × 365 = £313.88
  • Amount per serving: stated on the label.

Vitamin C

  • Servings: 3750 ÷ 25 per serving = 150
  • In the pack: 150 × 52 mg = 7.8 g
  • £128.99 ÷ 7.8 g × 1 g = £16.54 per 1 g
  • A week £16.54 × 7 = £115.76 · a month × 30 = £496.12 · a year × 365 = £6036.07
  • 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.

How it compares: whey protein concentrate

All 160, ranked →
100% ProteinCheapest per 25 g proteinProtein Works · 18 g a serving · £17.62 a month · a pack lasts 5 months59p£84.59View at Protein Works (opens in a new tab)
Whey Protein 360Protein Works · 18 g a serving · £20.30 a month · a pack lasts 29 days68p£19.49View at Protein Works (opens in a new tab)
Whey Protein 360Protein Works · 18 g a serving · £20.30 a month · a pack lasts 29 days68p£19.49View at Protein Works (opens in a new tab)
This productMyprotein · 20 g a serving · £32.25 a month · a pack lasts 4 months£1.07shown above

Ranked purely by price per 25 g protein. 54 combination products also contain protein powder.

How it compares: bovine collagen

All 63, ranked →
Collagen Protein PowderCheapest per 10 gMyprotein · 20 g a serving · £11.17 a month · a pack lasts 6 months37p£66.99View at Myprotein (opens in a new tab)
VitaBrightBovine Collagen Peptides Powder 500GVitaBright · 10 g a serving · £11.99 a month · a pack lasts 50 days40p£19.99View at VitaBright (opens in a new tab)
Collagen Protein PowderMyprotein · 20 g a serving · £12.00 a month · a pack lasts 2 months40p£23.99View at Myprotein (opens in a new tab)
This productMyprotein · 10 g a serving · £25.80 a month · a pack lasts 5 months86pshown above

Ranked purely by price per 10 g. 65 combination products also contain collagen.

How it compares: vitamin C

All 113, ranked →
Vitamin C Plus TabletsCheapest per 1 gMyprotein · 1 g a serving · £1.00 a month · a pack lasts 6 months3p£5.99View at Myprotein (opens in a new tab)
Vitamin C Crystals PowderHealf · 1.1 g a serving · £1.01 a month · a pack lasts 7 months3p£7.61View at Healf (opens in a new tab)
Vitamin C PowderLamberts Healthcare (Nature's Best) · 1 g a serving · £1.50 a month · a pack lasts 8 months5p£12.50View at Lamberts Healthcare (opens in a new tab)
This productMyprotein · 52 mg a serving · £496.12 a month · a pack lasts 8 days£16.54shown above

Ranked purely by price per 1 g. 950 combination products also contain vitamin C.

On the label

Protein powder · Whey concentrate
20 g per serving (stated on the label)
Collagen · Bovine
10 g per serving (stated on the label)
Pack
3.75 kg · 150 servings · 25 g a serving
Cost per serving
86p (150 servings in the pack)
More label details
Vitamin C · Standard (ascorbic acid and ascorbates)
52 mg per serving (stated on the label)
Barcode
5059883467597
Sold by
Myprotein
What the listing says
“3750g” · “150servings” · “Per 25g” · “Collagen ; 40.0g ; 10.0g”
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One 25 g dose is our comparison unit, not a recommendation.

Price history

1 price change since 3 October 2026. Checked on 18 days, most recently 20 October 2026.

Lowest recorded
£120.493 Oct
Highest recorded
£128.9913 Oct
First recorded
£120.493 Oct
Checked on
18 dayssince 3 Oct
Pack price at each check.
  1. Up at Myprotein: £120.49 → £128.99 (+7.1%)
  2. First checked at Myprotein: £120.49

Questions about this product

How much does Myprotein Impact Whey Protein + Collagen cost per 10 g?

86p per 10 g, from £128.99 for 3.75 kg at Myprotein, checked on 20 October 2026.

How long does one pack last?

5 months at one 10 g dose. The pack holds 1,500 g in total.

How much does Myprotein Impact Whey Protein + Collagen cost per 25 g protein?

£1.07 per 25 g protein, from £128.99 for 3.75 kg at Myprotein, checked on 20 October 2026.

How long does one pack last?

4 months at one 25 g dose. The pack holds 3,000 g in total.

How much does Myprotein Impact Whey Protein + Collagen cost per 1 g?

£16.54 per 1 g, from £128.99 for 3.75 kg at Myprotein, checked on 20 October 2026.

How long does one pack last?

8 days at one 1 g dose. The pack holds 7.8 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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