Your search for "magnesium" revealed the following:

Sale price £88.49 Regular price £130.00 Sale
Sale price £64.10 Regular price £90.00 Sale
Sale price £84.20 Regular price £90.00 Sale
Sale price £98.00 Regular price £130.00 Sale
Sale price £79.70 Regular price £90.00 Sale
On Sale from £99.15 Regular price £130.00 Sale
On Sale from £29.08 Regular price £40.00 Sale
Sale price £134.32 Regular price £150.00 Sale
Sale price £30.50 Regular price £40.00 Sale
On Sale from £89.99 Regular price £120.00 Sale
Sale price £32.95 Regular price £50.00 Sale
Sale price £67.58 Regular price £90.00 Sale