Your search for "Effervescent tablet" revealed the following:

Sale price £48.07 Regular price £70.00 Sale
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Sale price £53.99 Regular price £70.00 Sale
On Sale from £22.99 Regular price £30.00 Sale
Sale price £38.99 Regular price £50.00 Sale
Sale price £96.09 Regular price £130.00 Sale
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Sale price £93.27 Regular price £130.00 Sale