Your search for "Effervescent tablet" revealed the following:

Sale price £78.99 Regular price £90.00 Sale
Sale price £66.98 Regular price £90.00 Sale
Sale price £39.97 Regular price £50.00 Sale
Sale price £69.95 Regular price £90.00 Sale
Sale price £123.36 Regular price £150.00 Sale
Sale price £37.97 Regular price £50.00 Sale
Regular price £79.99
Sale price £39.99 Regular price £50.00 Sale
On Sale from £68.99 Regular price £90.00 Sale
Sale price £32.40 Regular price £40.00 Sale