Your search for "magnesium" revealed the following:

Sale price £89.37 Regular price £130.00 Sale
Sale price £79.90 Regular price £110.00 Sale
Sale price £81.13 Regular price £90.00 Sale
Sale price £79.49 Regular price £90.00 Sale
Sale price £148.99 Regular price £200.00 Sale
Sale price £49.08 Regular price £70.00 Sale
Sale price £33.95 Regular price £50.00 Sale
Sale price £89.30 Regular price £130.00 Sale
Sale price £87.99 Regular price £90.00 Sale
Sale price £62.95 Regular price £90.00 Sale
On Sale from £54.10 Regular price £60.00 Sale
Sale price £79.04 Regular price £130.00 Sale