Piriton tablets and syrup contain the active ingredient chlorphenamine maleate. Chlorphenamine is a type of medicine called a sedating antihistamine, so-called because it can make you feel sleepy.

How long does Piriton drowsiness last?

feeling sleepy during the daytime - drowsiness usually wears off 4 to 6 hours after a dose. Do not drive or use tools or machinery if you're feeling this way. feeling sick (nausea) - it may help if you don't eat rich or spicy food while you're taking chlorphenamine.

Do Piriton tablets make you drowsy?

- you should not take Piriton allergy tablets. These tablets can cause drowsiness, dizziness, blurred vision and loss of coordination. If you experience any of these effects do not drive or operate machinery.