Cenovis Mega Magnesium (325 mg elemental per tablet)
One tablet gives you 325 mg of magnesium. We can’t check it: only the magnesium figure is given. It costs $0.036 per 100 mg at the regular price.
can’t check: no compound weight no testing claim found
Compare with another productMagnesium blends (mixed compounds): all 7 compared
What the brand’s product page says
- Compound, as written
- “Magnesium (from Heavy Magnesium Oxide) 295mg, Magnesium (from Magnesium Amino Acid Chelate) 30mg”
- Compound per serve
- not givenfor any of the 2 compounds; only their magnesium is stated
- Magnesium per serve
- 325 mg
- Serve
- 1 tablet, 300 serves per pack, tablet
- Compounds listed
- Heavy Magnesium Oxide: compound weight not given (stated as 295 mg magnesium)
- Magnesium Amino Acid Chelate: compound weight not given (stated as 30 mg magnesium)
- Register entry
- No AUST L number shown on the brand’s product page. A register search on 27 Oct 2026 didn’t reach its entry page. That doesn’t mean it’s unlisted.
- Read from
- Cenovis 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.
- Heavy Magnesium Oxide: 60.3 % magnesium
- Magnesium Amino Acid Chelate: no standard share. With no amino acid named, it could be any of several compounds, each with its own share.
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:
295 mg of magnesium takes about 489 mg of Heavy Magnesium Oxide
Show the chemistry
295 mg ÷ 0.603 ≈ 489 mg compoundVersion used: magnesium oxide (MgO, molar mass 40.30 g/mol), share 0.603. reference (opens in a new tab)
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 325 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). A general look for HASTA (Human and Supplement Testing Australia) or Informed Sport listings or certificates found none; we haven’t yet looked by brand name.
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: Regular price $34.99 · 300 tablets · Chemist Warehouse · 27 Oct 2026.
$34.99 ÷ 300 serves = 11.7c a tablet11.7c ÷ 325 mg × 100 = $0.036 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 | Regular price | $34.99 for 300 tablets | 12c | $0.036 | 27 Oct 2026 | 300 tablets 'Exclusive Size'. Page shows one price, '$34.99', with no RRP, EDLP, sale or member wording. |
| Chemist Warehouse (opens in a new tab)not used | Earlier observation (price type not recorded) | $34.99 for 300 tablets | not used | not used | 26 Oct 2026 | 300 tablets 'Exclusive Size'. No RRP shown. |
Notes
The brand’s page and the Chemist Warehouse listing give only magnesium figures: 295 mg from heavy oxide and 30 mg from a chelate. No total is printed, so 325 mg is the two added; take 1 tablet daily with food.
Corrections
- 27 Oct 2026: Label source changed from the Chemist Warehouse listing (Chemist Warehouse listing, 300 tablets (opens in a new tab)) to the brand's own product page (Cenovis product page (opens in a new tab)), read 27 Oct 2026; a brand's page ranks above a retailer listing. Figures unchanged: magnesium 295 mg from heavy magnesium oxide and 30 mg from magnesium amino acid chelate; no compound weights stated. Compound wording updated to the brand page's panel text.
Sources we opened
- Chemist Warehouse listing, 300 tablets (opens in a new tab)
- Cenovis product page (opens in a new tab)
Added 26 Oct 2026. Figures last read 27 Oct 2026.