The generic name of Merrill is ibuprofen suspension, after drinking the general 0.5 ~ 1 hour can reduce fever, but according to the patient’s body temperature, condition, physical condition of the different fever reduction time will have some differences. Ibuprofen suspension is a non-steroidal antipyretic analgesic anti-inflammatory drug, the drug is easy to absorb orally, the body temperature rises to 38.5 ℃ after taking, 0.5 ~ 1 hour to see the effect, the body temperature gradually return to normal, the control of the body temperature normal time average is about 5 hours. Patients with severe and uncontrolled infections, centralized fever or old and frail patients may have unsatisfactory temperature control. If temperature control is unsatisfactory after administration of Ibuprofen Suspension or recurrent fever occurs, concomitant sexual physical hypothermia may be indicated, and prompt medical attention should be sought to address the cause of the illness.