Blackmores
Bio Magnesium.
50 tablets. Compared per 1 tablet.
Label and price checked 22 October 2026.
Already elemental magnesium
per 1 tablet
Stated on published label
per 1 tablet
Elemental magnesium
from a $15.00 pack
Read the stated amount.
Per tablet: magnesium oxide equivalent 265.3 mg; magnesium phosphate equivalent 36.2 mg; total magnesium 301.5 mg.
This entry already quotes elemental magnesium. It is used directly, with no second conversion.
Current brand sale price for the selected 50-tablet pack; standard price was $19.99.
$15.00 ÷ (50 units ÷ 1 units × 301.5 mg) × 100 mg
= $0.10 per 100 mg
What this tells you.
These numbers compare published pack and label figures. They do not establish absorption, effectiveness or suitability for you. The comparison unit is not a suggested dose.
Shipping and conditional discounts are excluded. Prices can change. Check the retailer’s current label, warnings and pack before buying.