Desloratadine (Kairuitan) is the first generation antihistamine, desloratadine (Enlish) is the second generation antihistamine, and desloratadine is the metabolic drug of desloratadine. High bioavailability, few adverse reactions, no drowsiness adverse reactions, very safe and effective. The dosage is also reduced from 10mg to 5mg, which is convenient for drivers to take once a day. Price: loratadine: 17- 19 yuan/box of desloratadine: 32. 5-35 yuan/box