Piriton products contain the antihistamine chlorphenamine, which is a medicine used to treat allergies.Relieving symptoms of allergies such as hayfever, nettle rash (urticaria), food allergies and reactions to insect bites or medicines.Relieving symptoms of a more serious allergic reaction called angioneurotic oedema, which causes swelling of the eyes, lips, tongue or throat.


How does Piriton work?

Piriton products contain the active ingredient chlorphenamine maleate, which is a type of medicine called a sedating antihistamine.

It works by preventing the actions of histamine – a substance produced by the body when it reacts to a foreign substance such as pollen or pet fur (an allergen). Histamine causes a chain reaction that results in allergic symptoms. Chlorphenamine blocks histamine receptors and so stops this chain reaction.

Chlorphenamine is called a sedating antihistamine because it enters the brain in significant quantities and causes drowsiness.

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