Your search for "magnesium" revealed the following:

Sale price £165.94 Regular price £200.00 Sale
On Sale from £29.80 Regular price £40.00 Sale
Sale price £38.95 Regular price £50.00 Sale
Sale price £48.50 Regular price £80.00 Sale
Sale price £55.93 Regular price £70.00 Sale
Sale price £89.30 Regular price £130.00 Sale
Sale price £77.56 Regular price £90.00 Sale
Sale price £30.65 Regular price £40.00 Sale
Sale price £56.25 Regular price £60.00 Sale
Sale price £59.53 Regular price £90.00 Sale
Sale price £119.20 Regular price £150.00 Sale
Sale price £49.50 Regular price £70.00 Sale