Piriton Syrup contains the pharmacy strength antihistamine called Chlorphenamine Maleate. It is used for the relief of common allergies and conditions like:Pollen (Hay Fever)Pets (Cats, Dogs etc)House dust miteMould spore allergiesFood, Medicines, AdditivesInsect Bites and StingsItchy Chicken Pox blistersIndividuals who are sensitive to some of the above common allergens will often display some of the following symptoms. These symptoms may develop rapidly or gradually and can often affect eyes, nose and skin:ItchinessRednessSwellingTendernessIrritationsneezing, or an itchy runny blocked nose