If the fever reducer does not take effect after 1 hour and the temperature does not drop to normal, consider repeating the fever reducer 1 time at intervals. If you are using ibuprofen or acetaminophen, you can repeat the fever reducer at 4-6 hour intervals. In addition, while using antipyretics, it is important to treat the cause of the fever. Antipyretics are only symptomatic medications, and if they are not used to treat the cause, there is no way to eradicate the disease, and the temperature will probably rise again after stopping the medication. Therefore, if the body temperature does not drop to normal after 1 hour of taking antipyretic medication, it is necessary to repeat the use of antipyretic medication in addition to the treatment of the cause of the disease. If the body temperature does not drop to normal, you should go to the hospital for medical consultation, examination and treatment.