Merlin is an antipyretic and analgesic drug, the main ingredient is ibuprofen, this drug can be repeated once at an interval of 6-8 hours, usually no more than 4 times per 24 hours. After the use of the drug, the therapeutic effect can be exerted in about half an hour, usually 1-2 hours after taking the drug, the blood concentration reaches its peak, which is also the time when the drug plays its best efficacy. It lasts for about 6-8 hours, so the drug can be repeated at 6-8 hour intervals. When using Merlin, special attention should be paid to the fact that the drug is prone to gastrointestinal adverse reactions. If the patient has an active peptic ulcer or bleeding, Merlin should not be used. When you have a fever, you should pay attention to finding the cause of the fever and treat it accordingly, and you need to go to the hospital for timely consultation for long-term recurrent fever. You should not blow the fan directly when you have fever to avoid aggravation of the condition, nor should you keep warm excessively, which is not conducive to heat dissipation and aggravates clinical symptoms.