Children can take Cetirizine Oral Solution, which is an antihistamine and belongs to the second generation of antihistamines, and can play a good role in the treatment of conditions caused by excessive histamine release. Firstly, it can treat allergic rhinitis in children. If children suffer from allergic rhinitis, it will cause a series of symptoms such as nasal congestion, runny nose, sneezing and itchy nose, etc. Cetirizine can be applied to children to relieve them. Next is the treatment of urticaria in children. If a child suffers from urticaria, which causes itchy skin and a rash like a windbreak, the application of cetirizine can also play a good role in the treatment.