Cetirizine can be taken by children because it is a second generation antihistamine that can effectively suppress the symptoms caused by excessive release of histamine. For example, when children suffer from allergic rhinitis, they often have symptoms such as nasal congestion, runny nose, sneezing, etc. Cetirizine can be applied to relieve nose symptoms. In addition, children suffering from urticaria often have a rash and itchy skin, which can be treated with cetirizine.