Your search for "magnesium" revealed the following:

Sale price £78.11 Regular price £90.00 Sale
Sale price £23.15 Regular price £30.00 Sale
Sale price £12.99 Regular price £20.00 Sale
Sale price £156.31 Regular price £200.00 Sale
On Sale from £69.80 Regular price £90.00 Sale
Sale price £24.20 Regular price £30.00 Sale
Sale price £110.24 Regular price £144.41 Sale
Sale price £86.77 Regular price £90.00 Sale
On Sale from £59.89 Regular price £70.00 Sale
On Sale from £28.95 Regular price £40.00 Sale
Sale price £183.80 Regular price £240.78 Sale