Your search for "magnesium" revealed the following:

Sale price £147.70 Regular price £200.00 Sale
Sale price £89.30 Regular price £130.00 Sale
On Sale from £34.45 Regular price £50.00 Sale
Sale price £79.54 Regular price £90.00 Sale
Sale price £114.90 Regular price £150.00 Sale
Sale price £39.92 Regular price £50.00 Sale
Sale price £89.90 Regular price £130.00 Sale
Sale price £12.99 Regular price £20.00 Sale
On Sale from £89.69 Regular price £130.00 Sale