(1) Some ingredients added to the water, e.g. menthol, eucalyptus, camphor, thymol and pine oil also give a sensation of clearing the passageways.(2) Listerine also contains essential oils from herbs including eucalyptol, thymol , methyl salicylate and menthol.(3) The combination of thymol , eucalyptol, methyl salicylate and menthol in an alcohol base may have antifungal activity.(4) Several of these - sage, rosemary, thyme, horsebalm and mountain dittany - are rich in thymol and carvacrol, compounds that help muscles relax.(5) Other natural antimicrobials include the phenolic compounds thymol , found in thyme, oregano and sage, and eugenol, the main flavour ingredient of cloves and allspice.
