Ultra Magnesium 3-in-1 Complex, 90 tablets
£9.95 for 90 tablets at Vitabiotics. That works out at 9p per 100 mg magnesium, which ranks it 33rd of the 79 magnesium blends and other forms we price across 15 UK retailers.
At one 100 mg dose a day, this pack lasts 4 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 90 ÷ 3 per serving = 30
- In the pack: 30 × 375 mg = 11.3 g
- £9.95 ÷ 11.3 g × 100 mg = 8.84p per 100 mg magnesium
- A week 8.84p × 7 = 62p · a month × 30 = £2.65 · a year × 365 = £32.28
- 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 blends and other forms
All 79, ranked →
Switching to the Vitabiotics pack saves £1.07 a month at the same 100 mg dose.
Ranked purely by price per 100 mg magnesium. 236 combination products also contain magnesium.
On the label
- Magnesium · Blends and other forms
- 375 mg per serving (stated on the label)
- Pack
- 90 tablets · 30 servings · 3 tablet(s) a serving
- Cost per serving
- 33p (30 servings in the pack)
More label details
- Barcode
- 5021265000326
- Sold by
- Vitabiotics
- What the listing says
- “90 Tablets” · “Average per 3 tablets” · “Magnesium ; 375mg ; 100”
Ingredients
Magnesium Citrate, Magnesium Malate, Magnesium Bisglycinate, Bulking Agent: Microcrystalline Cellulose, Tablet Coating (Hydroxypropylmethylcellulose, Ethyl Cellulose, Glycerin, Colour: Calcium Carbonate), Anti-caking Agents (Purified Talc & Magnesium Stearate), Polyvinylpyrrolidone, Polyvinylpolypyrrolidone.
From the Vitabiotics 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 tablets.
What you paid
Optional. At Vitabiotics today: £9.95.
“Order by” allows 5 working days’ delivery from Vitabiotics and your spare days.
Price history
No price change since 23 September 2026. Checked on 2 days, most recently 9 October 2026.
- Price at every check
- £9.95Vitabiotics
- First recorded
- £9.9523 Sept
- Checked on
- 2 dayssince 23 Sept
- First checked at Vitabiotics: £9.95
Questions about this product
How much does Vitabiotics Ultra Magnesium 3-in-1 Complex cost per 100 mg magnesium?
9p per 100 mg magnesium, from £9.95 for 90 tablets at Vitabiotics, checked on 9 October 2026.
Is it the cheapest of the magnesium blends and other forms in the UK?
No, it is 33rd of 79. Magnesium 500mg at ZipVit works out at 1p per 100 mg magnesium.
How long does one pack last?
4 months at one 100 mg dose. The pack holds 11.3 g in total.
About Vitabiotics
Founded 1971 · London, England
Vitabiotics is a British vitamins and supplements company based in London. Professor Kartar Lalvani founded it in 1971, and his son Tej Lalvani is group chief executive.
All 100 Vitabiotics products, priced per doseVisit Vitabiotics (opens in a new tab)
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