Products / Magnesium / Citrate
Swisse Ultiboost Magnesium (150 mg elemental per tablet)
One tablet gives you 150 mg of magnesium. We can’t check it: only the magnesium figure is given. It costs $0.21 per 100 mg at the RRP.
can’t check: no compound weight no testing claim found
Compare with another productMagnesium citrate: all 2 compared
What the brand’s product page says
- Compound, as written
- “Magnesium (from magnesium citrate) 150 mg”
- Compound per serve
- not given
- Magnesium per serve
- 150 mg
- Serve
- 1 tablet, 120 serves per pack, tablet
- Register entry
- AUST L 355159 · ARTG entry (opens in a new tab)AUST L: listed on the national register of medicines (ARTG). Its ingredients and claims come from approved lists. The TGA, the regulator, didn’t evaluate this product itself before sale.
- Read from
- Swisse product page (opens in a new tab) (brand site), read 27 Oct 2026
How much of the compound is magnesium
Only part of each compound is magnesium. Here’s that share for each one. Some compounds come in several versions, for example with water in the crystals. Each version has its own share.
- Magnesium citrate: 16.2 % magnesiumThis name covers more than one version, and the brand’s product page doesn’t say which. We use our standard one.
Our maths
The brand’s product page gives the magnesium only. With no compound weight, there’s nothing to multiply, so we can’t check it. For reference, here’s how much compound would carry the stated magnesium:
150 mg of magnesium takes about 928 mg of magnesium citrate
Show the chemistry
150 mg ÷ 0.1616 ≈ 928 mg compoundVersion used: trimagnesium dicitrate, anhydrous (Mg3(C6H5O7)2, molar mass 451.11 g/mol), share 0.1616. reference (opens in a new tab)
Other versions: magnesium citrate 1:1, MgHC6H5O7, anhydrous 0.1134; trimagnesium dicitrate nonahydrate 0.1189.
Do the figures agree?
can’t check: no compound weight
We can’t tell: there’s only one figure. The brand’s product page gives 150 mg of magnesium per serve, but not the weight of the compound it comes from. So there’s nothing to check it against. This is common, and it isn’t a mark against the product. Why it matters to you: the cost per 100 mg still works. It rests on the stated figure alone.
Third-party testing
no testing claim found
No testing claim or certificate on the brand’s product page. That’s true of most products here, and it isn’t a mark against this one. The TGA doesn’t check each product before it goes on sale. If batch testing matters to you, ask the brand.
Our note: Neither the brand’s page nor the Chemist Warehouse listing mentions testing (both read 27 Oct 2026). We looked for a HASTA (Human and Supplement Testing Australia) or Informed Sport listing or certificate naming this brand, and found none.
Prices, and what the magnesium costs
Prices are the recommended retail price (RRP), or the regular shelf price where no RRP is shown. Sale and member prices aren’t used, so you may pay less.
Price used: RRP $37.49 · 120 tablets · Chemist Warehouse · 27 Oct 2026.
$37.49 ÷ 120 serves = 31.2c a tablet31.2c ÷ 150 mg × 100 = $0.21 per 100 mg of magnesiumWe use the stated magnesium, not our maths, because that’s the figure you’re given. The price used is the lowest current RRP or regular price we’ve seen, at any shop. The list starts with the lowest current cost per 100 mg; earlier prices follow. Rows marked “Earlier observation (price type not recorded)” were seen up to 27 Oct 2026, before we switched to RRP. Some were sale prices. They stay here, greyed, as history, and no figure uses them.
| Retailer | Price type | Price and pack | Per serve | Per 100 mg | Seen | Note |
|---|---|---|---|---|---|---|
| Chemist Warehouse (opens in a new tab)price used above | RRP | $37.49 for 120 tablets | 31c | $0.21 | 27 Oct 2026 | Page prints "Don't Pay RRP $37.49" and '$18.75 Off RRP' (half-price offer); selling price shown was $18.74 (not used). |
| Chemist Warehouse (opens in a new tab)not used | Earlier observation (price type not recorded) | $18.74 for 120 tablets | not used | not used | 26 Oct 2026 | '$18.75 Off RRP', 'Don't Pay RRP $37.49'; half-price sale. |
Notes
The brand’s page and the Chemist Warehouse listing give the same panel; the brand’s page directs one tablet daily for general use. Its ARTG entry, 355159, was active, opened 27 Oct 2026.
Corrections
- 27 Oct 2026: Label source changed from the Chemist Warehouse listing (Chemist Warehouse listing, 120 tablets (opens in a new tab)) to the brand's own product page (Swisse product page (opens in a new tab)), read 27 Oct 2026; a brand's page ranks above a retailer listing. Figures unchanged: magnesium 150 mg per tablet; no citrate weight stated. Compound wording changed from 'Magnesium (from magnesium citrate)' to the brand page's 'Magnesium (from magnesium citrate) 150 mg'.
Sources we opened
Added 26 Oct 2026. Figures last read 27 Oct 2026.