Merlin ibuprofen suspension is a non-steroidal antipyretic and analgesic drug used for fever of various causes. However, in addition to antipyretic treatment, patients with fever should actively go to the hospital to find the cause of the fever and treat the cause. In addition, for adults who do not exceed 38.5°C, do a good job of symptomatic treatment by drinking more water, physical cooling, etc. When the body temperature is higher than 38.5°C, oral ibuprofen suspension can be used for treatment. However, for children and the elderly, Merlin ibuprofen suspension can be given when the body temperature exceeds 38.0°C. Especially for children, convulsions can occur when high fever occurs, especially for children who have had febrile convulsions before, more attention should be paid to prevent them. However, adults, the elderly and children should remember to drink more warm water after taking Merlin orally to achieve the best antipyretic and analgesic effect.