Merlin should not be taken 5 times in a row within 24 hours. Merlin belongs to ibuprofen suspension, which is a common pediatric drug that can treat upper respiratory tract infections, fever and fever. Usually the onset of action of Merlin in the body is 30 minutes, peak concentration of 12 hours, half-life in about 6 hours, so the maximum daily dose is 4 times. It is usually recommended for children to use 3-4 times/day, for example, for children under 12 years old, it is recommended to take 3 times/day, preferably not more than 4 times. First, if too much dose is taken in a day it will trigger the kidney burden, which will lead to renal insufficiency in the long run. Secondly, if taken too many times a day, it will also lead to a sharp drop in body temperature and a rapid cooling rate, which is not conducive to the recovery of the body’s immunity. Therefore, Merlin should not be taken 5 times within 24 hours, but at most 4 times within 24 hours.