Merrill, also known as ibuprofen, is a more commonly used antipyretic and analgesic. If the fever does not go down after taking Merrill and no sweating, it may be the following situations: First, the dose of the drug may not be very enough, according to the instructions for the use of the drug, combined with the specific situation of the patient or the child to see if there is no increase in the amount of the possible, if the instructions show that the dose is really small, you can also add the appropriate amount of the effect to look at it again. Secondly, it is possible that the effect of the medicine has not yet arrived, for example, 10 minutes or 15 minutes after taking the medicine, it may not show the effect of the medicine, generally speaking, the effect is about one hour, and the effect can last for 3-4 hours. Thirdly, it is true that Merrill Lynch does not work in this person, in which case other antipyretics should be considered.