The generic name of Merrill is Ibuprofen Suspension, how long it takes for the fever to go down after taking the medicine is not standardized clinically, and it needs to be judged according to the specific condition, in general, there will be a drop in body temperature in about 30 minutes to 1 hour. It takes time and process to reduce fever, and it is not possible to reduce fever immediately after taking the medicine. Usually, the temperature will drop gradually in about 30 minutes to 1 hour. However, as there are many causes of fever, such as viral, bacterial or mycoplasma infections, if the cause of the fever is not eliminated, the fever may recur. Therefore, if the fever does not subside after taking oral Merrill Lynch, it can be treated together with physical cooling. In addition, a small number of patients taking ibuprofen suspension may experience nausea, vomiting, and gastrointestinal ulcers. Also, it is contraindicated for those who are allergic to aspirin or other NSAIDs. Therefore, when patients have symptoms of recurrent fever that does not go away, they should go to the hospital in a timely manner to clarify the cause of the disease and then carry out targeted treatment.