Euthymol is a brand of antiseptic, fluoride-free^[1] toothpaste distributed by LG H&H UK that is characterised by its bright pink colour and medicinal taste. It is also notable for its packaging, which is old fashioned, having merely a pattern and the product name.

The supply of Euthymol toothpaste was temporarily interrupted in mid-2013 while the product was reformulated due to changes in the European Cosmetics Regulation.^[2] The new formulation of Euthymol was released to supply chains in January 2014 and was available in stores in February 2014.

The name Euthymol is a portmanteau of the words eucalyptus and thymol, which were the active ingredients of the original formulation. This was marketed by Parke, Davis & Co. as far back as 1896,^[3] and as well as toothpaste it was sold as a variety of antiseptic powders and creams, which contained thymol, oil of wintergreen, menthol, eucalyptus oil, boric acid and indigo,^[4] though modern formulations only contain the first three of those ingredients (amongst other things).