MagAsorb Advance Magnesium 300mg, 120 tablets
£11.95 for 120 tablets at Lamberts Healthcare (Nature's Best). That works out at 7p per 100 mg magnesium, which ranks it 6th of the 38 magnesium citrate products we price across 12 UK retailers.
At one 100 mg dose a day, this pack lasts 6 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 120 ÷ 2 per serving = 60
- In the pack: 60 × 300 mg = 18 g
- £11.95 ÷ 18 g × 100 mg = 6.64p per 100 mg magnesium
- A week 6.64p × 7 = 46p · a month × 30 = £1.99 · a year × 365 = £24.23
- 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.
On the label
- Magnesium · Citrate
- 300 mg per serving (stated on the label)
- Pack
- 120 tablets · 60 servings · 2 tablet(s) a serving
- Cost per serving
- 20p (60 servings in the pack)
More label details
- Claimed on the listing
- vegan, vegetarian
- Barcode
- 5055148411350
- Sold by
- Lamberts Healthcare (Nature's Best)
- What the listing says
- “Specifications: 120 Tablets” · “Each easy-to-swallow, taste-free tablet contains 150mg of highly absorbable magnesium citrate” · “confirmed from the retailer's own product page, not this listing's text: form id citrate; amount per serving 300.0; amount unit mg; amount refers to elemental; units per serving 2.0; pack units 120; pack unit type tablet”
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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: 2 tablets.
What you paid
Optional. At Lamberts Healthcare today: £11.95.
“Order by” allows 4 working days’ delivery from Lamberts Healthcare and your spare days.
Price history
No price change since 21 September 2026. Checked on 27 days, most recently 20 October 2026.
- Price at every check
- £11.95Lamberts Healthcare (Nature's Best)
- First recorded
- £11.9521 Sept
- Checked on
- 27 dayssince 21 Sept
- First checked at Lamberts Healthcare (Nature's Best): £11.95
Questions about this product
How much does Nature's Best MagAsorb Advance Magnesium 300mg cost per 100 mg magnesium?
7p per 100 mg magnesium, from £11.95 for 120 tablets at Lamberts Healthcare (Nature's Best), checked on 20 October 2026.
Is it the cheapest magnesium citrate in the UK?
No, it is 6th of 38. Magnesium Citrate Tablets 700mg at Simply Supplements works out at 2p per 100 mg magnesium.
How long does one pack last?
6 months at one 100 mg dose. The pack holds 18 g in total.
About Nature's Best
Founded 1981 · Tunbridge Wells, England · Part of Procter & Gamble
Nature's Best is a vitamins and supplements brand based in Tunbridge Wells, Kent, that has sold direct to the public since 1981. It is a trading name of Lamberts Healthcare Ltd, which also supplies practitioners and pharmacists under the Lamberts name.
All 136 Nature's Best products, priced per doseVisit Nature's Best (opens in a new tab)
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