Your search for "effervescent tablet" revealed the following:

On Sale from £79.48 Regular price £90.00 Sale
Sale price £69.99 Regular price £90.00 Sale
Sale price £59.99 Regular price £90.00 Sale
Sale price £39.30 Regular price £50.00 Sale
On Sale from £31.50 Regular price £40.00 Sale
Sale price £32.99 Regular price £40.00 Sale
Sale price £33.99 Regular price £40.00 Sale
Sale price £62.99 Regular price £90.00 Sale
Sale price £26.39 Regular price £30.00 Sale
Sale price £65.26 Regular price £90.00 Sale