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Home › Minerals › Magnesium

QuintonMinerals

Hypertonic Ampoules

£25.99 for 30 servings at Healf. 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 100 mg magnesium£7.88One 100 mg dose is our comparison unit for magnesium. It is not a recommendation.
A day£7.88
A week£55.13
A month£236.27
A year£2874.65

At one 100 mg dose a day, this pack lasts 3 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Magnesium

  • In the pack: 30 × 11 mg = 330 mg
  • £25.99 ÷ 330 mg × 100 mg = £7.88 per 100 mg magnesium
  • A week £7.88 × 7 = £55.13 · a month × 30 = £236.27 · a year × 365 = £2874.65
  • Amount per serving: stated on the label.

Electrolytes

  • In the pack: 30 × 1 serving = 30 servings
  • £25.99 ÷ 30 servings × 1 serving = 86.6p per serving
  • A week 86.6p × 7 = £6.06 · a month × 30 = £25.99 · a year × 365 = £316.21
  • Amount per serving: priced per serving — compare what each serving contains before choosing.

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: magnesium blends and other forms

All 79, ranked →
ZipVitMagnesium 500mgCheapest per 100 mg magnesiumZipVit · 500 mg a serving · 33p a month · a pack lasts 4.9 years1p£19.99View at ZipVit (opens in a new tab)
Magnesium Glycinate X3Protein Works · 1.81 g a serving · 40p a month · a pack lasts 2.2 years1p£10.99View at Protein Works (opens in a new tab)
Magnesium CapsHealf · 500 mg a serving · 41p a month · a pack lasts 1.4 years1p£6.75View at Healf (opens in a new tab)
QuintonThis productHealf · 11 mg a serving · £236.27 a month · a pack lasts 3 days£7.88shown above

Ranked purely by price per 100 mg magnesium. 236 combination products also contain magnesium.

How it compares: electrolytes

All 260, ranked →
Electrolyte PowderCheapest per servingBulk · 1 serving a serving · £1.80 a month · a pack lasts 1.4 years6p£29.99View at Bulk (opens in a new tab)
Electrolyte PowderBulk · 1 serving a serving · £2.04 a month · a pack lasts 8 months7p£16.99View at Bulk (opens in a new tab)
Electrolyte PowderBulk · 1 serving a serving · £2.99 a month · a pack lasts 50 days10p£4.99View at Bulk (opens in a new tab)
QuintonThis productHealf · 1 serving a serving · £25.99 a month · a pack lasts 30 days87pshown above

Ranked purely by price per serving. 32 combination products also contain electrolytes.

On the label

Magnesium · Blends and other forms
11 mg per serving (stated on the label)
Electrolytes · Electrolytes (per serving)
1 serving per serving (priced per serving — compare what each serving contains before choosing)
Pack
30 servings · 10 ml a serving
Cost per serving
87p (30 servings in the pack)
More label details
Sold by
Healf
What the listing says
“Servings Per Container: 30” · “Serving Size: 1 Drinkable Ampoule (10ml)”
Ingredients

Cold Micro-Filtered Natural Seawater

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

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One 100 mg dose is our comparison unit, not a recommendation.

Price history

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

Lowest recorded
£24.491 Oct
Highest recorded
£25.992 Oct
First recorded
£24.491 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Up at Healf: £24.49 → £25.99 (+6.1%)
  2. First checked at Healf: £24.49

Questions about this product

How much does Quinton Hypertonic Ampoules cost per serving?

87p per serving, from £25.99 for 30 servings at Healf, checked on 20 October 2026.

How long does one pack last?

30 days at one serving. The pack holds 30 servings in total.

How much does Quinton Hypertonic Ampoules cost per 100 mg magnesium?

£7.88 per 100 mg magnesium, from £25.99 for 30 servings at Healf, checked on 20 October 2026.

How long does one pack last?

3 days at one 100 mg dose. The pack holds 330 mg in total.

Keep comparing

All magnesiumEvery form, cheapest per 100 mg magnesium firstMagnesium blends and other forms79 products rankedMagnesium guideWhat it is, why people take it, how the forms differMineralsEverything else we price in this categoryMagnesium price historyEvery magnesium 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