Magnesium Citrate, 240 capsules
£16.45 for 240 capsules at Healf. That works out at 5p per 100 mg magnesium, which ranks it 3rd of the 38 magnesium citrate products we price across 12 UK retailers.
At one 100 mg dose a day, this pack lasts 11 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 240 ÷ 3 per serving = 80
- In the pack: 80 × 400 mg = 32 g
- £16.45 ÷ 32 g × 100 mg = 5.14p per 100 mg magnesium
- A week 5.14p × 7 = 36p · a month × 30 = £1.54 · a year × 365 = £18.76
- 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 citrate
All 38, ranked →
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.
Pack sizes
| Pack | Price | Per dose | A year |
|---|---|---|---|
| 240 capsulesthis pack | £16.45 | 5p | £18.76 |
| 120 capsules | £11.98 | 7p | £27.33 |
This pack is the cheapest of the 2 sizes per dose.
On the label
- Magnesium · Citrate
- 400 mg per serving (stated on the label)
- Pack
- 240 capsules · 80 servings · 3 capsule(s) a serving
- Cost per serving
- 21p (80 servings in the pack)
More label details
- Sold by
- Healf
- What the listing says
- “240 caps” · “Serving Size: 3 Veg Capsules” · “(from Magnesium Citrate) ; 400 mg ; 107%” · “from 2,667 mg Magnesium Citrate”
Ingredients
Magnesium (elemental) (from 2,667 mg Magnesium Citrate), Hypromellose (Cellulose Capsule), Antioxidant (Ascorbyl Palmitate), Anti-Caking Agent (Silicon Dioxide)
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.
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Filled in from the label’s serving: 3 capsules.
What you paid
Optional. At Healf today: £16.45.
“Order by” allows 3 working days’ delivery from Healf and your spare days.
Price history
No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.
- Price at every check
- £16.45Healf
- First recorded
- £16.451 Oct
- Checked on
- 20 dayssince 1 Oct
- First checked at Healf: £16.45
Questions about this product
How much does NOW Foods Magnesium Citrate cost per 100 mg magnesium?
5p per 100 mg magnesium, from £16.45 for 240 capsules at Healf, checked on 20 October 2026.
Is it the cheapest magnesium citrate in the UK?
No, it is 3rd of 38. Magnesium Citrate Tablets 700mg at Simply Supplements works out at 2p per 100 mg magnesium.
How long does one pack last?
11 months at one 100 mg dose. The pack holds 32 g in total.
About NOW Foods
All 109 NOW Foods products, priced per dose
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