Ibuprofen is the most commonly used clinical antipyretic with relatively minimal side effects and can be used by adults, children and infants. Ibuprofen suspension is formulated for infants and children and is particularly suitable for infants and children because it is palatable, easily absorbed, and infants and children are willing to take it. When taking ibuprofen suspension, it is important to note that it should be taken only when the fever is high, that is, when the axillary surface temperature is greater than 38.5°C or higher, and does not need to be taken when the fever is low. If a child, especially an infant or young child, has a previous history of febrile convulsions or is experiencing very obvious clinical discomfort due to fever. In order to relieve the symptoms and prevent the recurrence of febrile convulsions, ibuprofen suspension can be taken promptly even if the fever is low, i.e., if the axillary surface temperature is above 38℃. You should drink a lot of water after taking antipyretics for better results.