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Protein WorksAmino acids & derivatives

Creatine 360 300g Best Seller

£11.49 for 300 g at Protein Works. 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 5 g32pOne 5 g dose is our comparison unit for creatine. It is not a recommendation.
A day32p
A week£2.23
A month£9.57
A year£116.50

At one 5 g dose a day, this pack lasts 36 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Creatine

  • Servings: 300 ÷ 5 per serving = 60
  • In the pack: 60 × 3 g = 180 g
  • £11.49 ÷ 180 g × 5 g = 31.9p per 5 g
  • A week 31.9p × 7 = £2.23 · a month × 30 = £9.57 · a year × 365 = £116.50
  • Amount per serving: stated on the label.

Magnesium

  • Servings: 300 ÷ 5 per serving = 60
  • In the pack: 60 × 56 mg = 3.36 g
  • £11.49 ÷ 3.36 g × 100 mg = 34.2p per 100 mg magnesium
  • A week 34.2p × 7 = £2.39 · a month × 30 = £10.26 · a year × 365 = £124.82
  • 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.

How it compares: creatine monohydrate

All 160, ranked →
Creatine 360 1kg Berry BlitzCheapest per 5 gProtein Works · 2.7 g a serving · £2.83 a month · a pack lasts 6 months9p£16.99View at Protein Works (opens in a new tab)
Creatine Monohydrate PowderBulk · 5 g a serving · £3.00 a month · a pack lasts 7 months10p£19.99View at Bulk (opens in a new tab)
Creatine 360 1kg Best SellerProtein Works · 3 g a serving · £3.00 a month · a pack lasts 7 months10p£19.99View at Protein Works (opens in a new tab)
This productProtein Works · 3 g a serving · £9.57 a month · a pack lasts 36 days32pshown above

Ranked purely by price per 5 g. 73 combination products also contain creatine.

How it compares: magnesium citrate

All 38, ranked →
Magnesium Citrate Tablets 700mgCheapest per 100 mg magnesiumSimply Supplements · 700 mg a serving · 50p a month · a pack lasts 2.3 years2p£13.99View at Simply Supplements (opens in a new tab)
Natures AidMagnesium Citrate 750mg 60 CapsulesLloyds Pharmacy · 750 mg a serving · 76p a month · a pack lasts 1.2 years3p£11.45View at Lloyds Pharmacy (opens in a new tab)
Magnesium CitrateHealf · 400 mg a serving · £1.54 a month · a pack lasts 11 months5p£16.45View at Healf (opens in a new tab)
This productProtein Works · 56 mg a serving · £10.26 a month · a pack lasts 34 days34pshown above

Ranked purely by price per 100 mg magnesium. Labels here do not all state the same thing: this one gives stated on the label, the cheapest gives estimated from the compound weight using our conversion factor. Check both before choosing. 187 combination products also contain magnesium.

On the label

Creatine · Monohydrate
3 g per serving (stated on the label)
Magnesium · Citrate
56 mg per serving (stated on the label)
Pack
300 g · 60 servings · 5 g a serving
Cost per serving
19p (60 servings in the pack)
More label details
Barcode
5061062525387
Sold by
Protein Works
What the listing says
“300g” · “per 5g serving” · “[Creatine (mg) ; 3000]”
Ingredients

Creatine Monohydrate, Aquamin® (Magnesium Citrate), Coconut Water Powder, Flavouring, Acid (Citric Acid), Colour (Beetroot Powder), Coenzyme Q10, Vitamin D3, Vitamin B6, Sweetener (Sucralose).

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

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One 5 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
£11.49Protein Works
First recorded
£11.4923 Sept
Checked on
2 dayssince 23 Sept
Pack price at each check.
  1. First checked at Protein Works: £11.49

Questions about this product

How much does Protein Works Creatine 360 300g Best Seller cost per 5 g?

32p per 5 g, from £11.49 for 300 g at Protein Works, checked on 9 October 2026.

How long does one pack last?

36 days at one 5 g dose. The pack holds 180 g in total.

How much does Protein Works Creatine 360 300g Best Seller cost per 100 mg magnesium?

34p per 100 mg magnesium, from £11.49 for 300 g at Protein Works, checked on 9 October 2026.

How long does one pack last?

34 days at one 100 mg dose. The pack holds 3.36 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)

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