Your search for "magnesium" revealed the following:

Sale price £34.48 Regular price £50.00 Sale
Sale price £48.00 Regular price £70.00 Sale
Sale price £69.99 Regular price £90.00 Sale
On Sale from £69.70 Regular price £90.00 Sale
Sale price £79.90 Regular price £90.00 Sale
On Sale from £31.09 Regular price £40.00 Sale
Sale price £24.95 Regular price £30.00 Sale
Sale price £99.95 Regular price £130.00 Sale
Sale price £64.18 Regular price £90.00 Sale