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NBPureMinerals

Mag O7 Oxygen Detox Cleanse, 90 capsules

£34.99 for 90 capsules at Healf. That works out at 11p per 100 mg magnesium, which ranks it 8th of the 9 magnesium oxide products we price across 4 UK retailers.

What it really costs, per 100 mg magnesium11pOne 100 mg dose is our comparison unit for magnesium. It is not a recommendation.
A day11p
A week79p
A month£3.38
A year£41.13

At one 100 mg dose a day, this pack lasts 10 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Magnesium

  • Servings: 90 ÷ 3 per serving = 30
  • In the pack: 30 × 1.04 g = 31.1 g
  • £34.99 ÷ 31.1 g × 100 mg = 11.3p per 100 mg magnesium
  • A week 11.3p × 7 = 79p · a month × 30 = £3.38 · a year × 365 = £41.13
  • Amount per serving: stated on the label.

Potassium

  • Servings: 90 ÷ 3 per serving = 30
  • In the pack: 30 × 99 mg = 2.97 g
  • £34.99 ÷ 2.97 g × 200 mg = £2.36 per 200 mg potassium
  • A week £2.36 × 7 = £16.49 · a month × 30 = £70.69 · a year × 365 = £860.02
  • 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 magnesium oxide

All 9, ranked →
Magnesium Tablets 200mgSimply Supplements · 100 mg a serving · £1.61 a month · a pack lasts 12 months5p£19.29View at Simply Supplements (opens in a new tab)
Essential Magnesium TabletsMyprotein · 300 mg a serving · £1.72 a month · a pack lasts 9 months6p£15.49View at Myprotein (opens in a new tab)
Essential Magnesium TabletsMyprotein · 300 mg a serving · £2.00 a month · a pack lasts 3 months7p£5.99View at Myprotein (opens in a new tab)
Mag O7 Oxygen Detox CleanseHealf · 1.04 g a serving · £2.27 a month · a pack lasts 1.7 years8p£46.99View at Healf (opens in a new tab)
Mag O7 Oxygen Detox CleanseHealf · 1.04 g a serving · £2.41 a month · a pack lasts 1.7 years8p£49.99View at Healf (opens in a new tab)
This productHealf · 1.04 g a serving · £3.38 a month · a pack lasts 10 months11pshown above

Switching to the Simply Supplements pack saves £1.77 a month at the same 100 mg dose.

Ranked purely by price per 100 mg magnesium. 91 combination products also contain magnesium.

How it compares: potassium citrate

All 6, ranked →
Potassium Citrate 1300mg with Vitamin CCheapest per 200 mg potassiumSimply Supplements · 1.3 g a serving · 27p a month · a pack lasts 3.2 years1p£10.69View at Simply Supplements (opens in a new tab)
WeightWorldPotassium Citrate With Vitamin C TabletsWeightWorld · 801 mg a serving · £1.46 a month · a pack lasts 12 months5p£17.49View at WeightWorld (opens in a new tab)
Potassium CitrateHealf · 99 mg a serving · £2.86 a month · a pack lasts 3 months10p£8.49View at Healf (opens in a new tab)
This productHealf · 99 mg a serving · £70.69 a month · a pack lasts 15 days£2.36shown above

Ranked purely by price per 200 mg potassium. 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. 104 combination products also contain potassium.

Pack sizes

PackPricePer doseA year
180 capsules£49.998p£29.38
90 capsulesthis pack£34.9911p£41.13
30 capsules£23.9923p£84.60

At one 100 mg dose a day, the 180 capsules pack costs £11.75 less a year than this one.

On the label

Magnesium · Oxide
1.04 g per serving (stated on the label)
Potassium · Citrate
99 mg per serving (stated on the label)
Pack
90 capsules · 30 servings · 3 capsule(s) a serving
Cost per serving
£1.17 (30 servings in the pack)
More label details
Sold by
Healf
What the listing says
“90 caps” · “Serving Size: 3 Capsules” · “(as Ozonated Magnesium Oxides) ; 1035 mg”
Ingredients

Magnesium (MOXiO3™) (as Ozonated Magnesium Oxides), Potassium (as Potassium Citrate), Certified Organic Rice Flour, Acidity Regulator (Citric Acid), Vegetable Cellulose Capsules

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

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check
£34.99Healf
First recorded
£34.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £34.99

Questions about this product

How much does NBPure Mag O7 Oxygen Detox Cleanse cost per 100 mg magnesium?

11p per 100 mg magnesium, from £34.99 for 90 capsules at Healf, checked on 20 October 2026.

Is it the cheapest magnesium oxide in the UK?

No, it is 8th of 9. Magnesium 375mg 180 Tablets (3 month supply) at Boots works out at 4p per 100 mg magnesium.

How long does one pack last?

10 months at one 100 mg dose. The pack holds 31.1 g in total.

How much does NBPure Mag O7 Oxygen Detox Cleanse cost per 200 mg potassium?

£2.36 per 200 mg potassium, from £34.99 for 90 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

15 days at one 200 mg dose. The pack holds 2.97 g in total.

About NBPure

All 7 NBPure products, priced per dose

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