We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

perdose
Updated

Home › Amino acids & derivatives › Collagen

Protein WorksAmino acids & derivatives

Marine Collagen Peptides 360, 28 sachets

£58.99 for 28 sachets at Protein Works. That works out at £2.63 per 10 g, which ranks it 31st of the 70 marine collagen products we price across 12 UK retailers.

What it really costs, per 10 g£2.63One 10 g dose is our comparison unit for collagen. It is not a recommendation.
A day£2.63
A week£18.43
A month£79.00
A year£961.22

At one 10 g dose a day, this pack lasts 22 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Collagen

  • Servings: 28 ÷ 1 per serving = 28
  • In the pack: 28 × 8 g = 224 g
  • £58.99 ÷ 224 g × 10 g = £2.63 per 10 g
  • A week £2.63 × 7 = £18.43 · a month × 30 = £79.00 · a year × 365 = £961.22
  • Amount per serving: stated on the label.

Hyaluronic acid

  • Servings: 28 ÷ 1 per serving = 28
  • In the pack: 28 × 50 mg = 1.4 g
  • £58.99 ÷ 1.4 g × 100 mg = £4.21 per 100 mg
  • A week £4.21 × 7 = £29.50 · a month × 30 = £126.41 · a year × 365 = £1537.95
  • Amount per serving: stated on the label.

Vitamin C

  • Servings: 28 ÷ 1 per serving = 28
  • In the pack: 28 × 80 mg = 2.24 g
  • £58.99 ÷ 2.24 g × 1 g = £26.33 per 1 g
  • A week £26.33 × 7 = £184.34 · a month × 30 = £790.04 · a year × 365 = £9612.21
  • 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 marine collagen

All 70, ranked →
Super Strength Marine Collagen 11,000mg, Mango Peach FlavourHealf · 11 g a serving · £58.42 a month · a pack lasts 15 days£1.95£29.99View at Healf (opens in a new tab)
Super Strength Marine Collagen 11,000mgHealf · 11 g a serving · £59.20 a month · a pack lasts 33 days£1.97£65.12View at Healf (opens in a new tab)
Marine Collagen Beauty Blend 200gVitamin Planet · 7.5 g a serving · £70.70 a month · a pack lasts 15 days£2.36£35.35View at Vitamin Planet (opens in a new tab)
ZipVitMarine Collagen 1200mgZipVit · 1.2 g a serving · £72.19 a month · a pack lasts 11 days£2.41£25.99View at ZipVit (opens in a new tab)
Marine Collagen Peptides 360Protein Works · 8 g a serving · £77.22 a month · a pack lasts 34 days£2.57£86.49View at Protein Works (opens in a new tab)
This productProtein Works · 8 g a serving · £79.00 a month · a pack lasts 22 days£2.63shown above

Switching to the Healf pack saves £20.58 a month at the same 10 g dose.

Ranked purely by price per 10 g. 68 combination products also contain collagen.

How it compares: hyaluronic acid

All 20, ranked →
WeightWorldHyaluronic Acid CapsulesCheapest per 100 mgWeightWorld · 600 mg a serving · 90p a month · a pack lasts 2 years3p£21.49View at WeightWorld (opens in a new tab)
Hyaluronic Acid Tablets 150mgBulk · 150 mg a serving · £1.75 a month · a pack lasts 9 months6p£15.75View at Bulk (opens in a new tab)
Hyaluronic Acid Tablets 150mgBulk · 150 mg a serving · £2.08 a month · a pack lasts 3 months7p£6.25View at Bulk (opens in a new tab)
This productProtein Works · 50 mg a serving · £126.41 a month · a pack lasts 14 days£4.21shown above

Ranked purely by price per 100 mg. 74 combination products also contain hyaluronic acid.

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 productProtein Works · 80 mg a serving · £790.04 a month · a pack lasts 2 days£26.33shown above

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

On the label

Collagen · Marine
8 g per serving (stated on the label)
Hyaluronic acid · Hyaluronic acid
50 mg per serving (stated on the label)
Pack
28 sachets · 28 servings · 1 sachet(s) a serving
Cost per serving
£2.11 (28 servings in the pack)
More label details
Vitamin C · Standard (ascorbic acid and ascorbates)
80 mg per serving (stated on the label)
Barcode
5061115051405
Sold by
Protein Works
What the listing says
“Per Sachet” · “[Hydrolysed Marine Collagen ; 8000mg]” · “confirmed from the retailer's own product page, not this listing's text: form id marine; amount per serving 8000.0; amount unit mg; amount refers to compound; units per serving 1.0; pack units 28; pack unit type sachet”
Ingredients

Water, Hydrolysed Marine Collagen (Fish), Erythritol, Acidifying Agent: Citric Acid, Vitamin C (Ascorbic Acid), Natural Flavour, Thickener (Xanthan Gum), Hyaluronic Acid, Natural Bitter Masker, Preservative: Potassium Sorbate, Sweetener (Stevia E960a).

From the Protein Works listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

Is something wrong? Tell us

Add to your basket

View basket

Your basket prices everything you take together: whole packs, delivery included, from as few websites as you like.

One 10 g dose is our comparison unit, not a recommendation.

Price history

No price change since 23 September 2026. Checked on 2 days, most recently 9 October 2026.

Price at every check
£58.99Protein Works
First recorded
£58.9923 Sept
Checked on
2 dayssince 23 Sept
Pack price at each check.
  1. First checked at Protein Works: £58.99

Questions about this product

How much does Protein Works Marine Collagen Peptides 360 cost per 10 g?

£2.63 per 10 g, from £58.99 for 28 sachets at Protein Works, checked on 9 October 2026.

Is it the cheapest marine collagen in the UK?

No, it is 31st of 70. Marine Collagen 1500mg at Simply Supplements works out at 68p per 10 g.

How long does one pack last?

22 days at one 10 g dose. The pack holds 224 g in total.

How much does Protein Works Marine Collagen Peptides 360 cost per 100 mg?

£4.21 per 100 mg, from £58.99 for 28 sachets at Protein Works, checked on 9 October 2026.

How long does one pack last?

14 days at one 100 mg dose. The pack holds 1.4 g in total.

How much does Protein Works Marine Collagen Peptides 360 cost per 1 g?

£26.33 per 1 g, from £58.99 for 28 sachets at Protein Works, checked on 9 October 2026.

How long does one pack last?

2 days at one 1 g dose. The pack holds 2.24 g in total.

About Protein Works

Founded 2012 · Liverpool, England · Part of Lactalis

Protein Works is a British nutrition company founded in 2012 by Mark Coxhead, Nick Smith and Karl Jacobie. It is based at PW Campus in Speke, Liverpool, which opened in 2025 and replaced several sites in Runcorn.

All 149 Protein Works products, priced per doseVisit Protein Works (opens in a new tab)

More from Protein Works

Keep comparing

All collagenEvery form, cheapest per 10 g firstMarine collagen70 products ranked, from 68pCollagen guideWhat it is, why people take it, how the forms differProtein WorksAll 149 products from this brand, per doseAmino acids & derivativesEverything else we price in this categoryCollagen price historyEvery collagen product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from