Brain-Mag Pro Magnesium L-Threonate, 90 capsules
£35.99 for 90 capsules at Healf. That works out at 83p per 100 mg magnesium, which ranks it 5th of the 10 magnesium L-threonate products we price across 1 UK retailer.
At one 100 mg dose a day, this pack lasts 43 days. 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 × 144 mg = 4.32 g
- £35.99 ÷ 4.32 g × 100 mg = 83.3p per 100 mg magnesium
- A week 83.3p × 7 = £5.83 · a month × 30 = £24.99 · a year × 365 = £304.08
- 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 L-threonate
All 10, ranked →
Switching to the Healf pack saves £9.40 a month at the same 100 mg dose.
Ranked purely by price per 100 mg magnesium. 5 combination products also contain magnesium.
On the label
- Magnesium · L-threonate
- 144 mg per serving (stated on the label)
- Pack
- 90 capsules · 30 servings · 3 capsule(s) a serving
- Cost per serving
- £1.20 (30 servings in the pack)
More label details
- Sold by
- Healf
- What the listing says
- “90 caps” · “Servings Per Container: 30” · “Serving Size: 3 Capsules” · “magnesium L-threonate) ; 144 mg” · “from 2000 mg Magtein”
Ingredients
Magnesium (from 2000 mg Magtein® Magnesium L-threonate), Vegetable Capsule, Rice Flour
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: £35.99.
“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
- £35.99Healf
- First recorded
- £35.991 Oct
- Checked on
- 20 dayssince 1 Oct
- First checked at Healf: £35.99
Questions about this product
How much does ProHealth Longevity Brain-Mag Pro Magnesium L-Threonate cost per 100 mg magnesium?
83p per 100 mg magnesium, from £35.99 for 90 capsules at Healf, checked on 20 October 2026.
Is it the cheapest magnesium L-threonate in the UK?
No, it is 5th of 10. Magnesium at Healf works out at 52p per 100 mg magnesium.
How long does one pack last?
43 days at one 100 mg dose. The pack holds 4.32 g in total.
About ProHealth Longevity
All 37 ProHealth Longevity products, priced per dose
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