What is the difference between cetirizine and piritonpiriton?

Cetirizine and Piriton (chlorpheniramine) are both antihistamines used to relieve allergy symptoms, but they differ in their sedative effects and duration of action. Cetirizine is a second-generation antihistamine that tends to cause less drowsiness and has a longer duration of action, making it suitable for daytime use. In contrast, Piriton is a first-generation antihistamine that is more sedating and may be better for nighttime use. Additionally, cetirizine is generally considered to have fewer side effects than Piriton.