Rizicin is nimesulide granules, which are no longer recommended for use in children because of the significant side effects. Small Ruizhiqing is ibuprofen granules, its composition is different, belongs to the antipyretic and analgesic drugs, with antipyretic and analgesic, anti-inflammatory effect, in pediatrics is often used to reduce the heat treatment, usually used for more than 6 months of children. When the body temperature exceeds 38.5 ℃, conventional physical cooling body temperature can not come down when you can consider using the drug. When applying it, it is necessary to pay attention to the fact that the interval between 2 times of antipyretics is at least 4 hours, and the maximum number of times of application is usually not more than 6 times within 24 hours. Overdose may cause side effects, such as headache, vomiting, low blood pressure, etc., which may disappear on their own after stopping the medicine. Antipyretics are symptomatic, if the temperature does not go down, you should go to the hospital.