Merrill Lynch and acetaminophen should not be used together. These are common fever-reducing medications used by children, so you should choose one or the other. Merrill is an ibuprofen-based antipyretic, so it should not be used together with acetaminophen because it can worsen liver and kidney function in children. Choose one according to the child’s temperature and weight, and in the 1-2 hours after the application of antipyretic drugs, drink more water and with some other corresponding physical cooling methods, usually the temperature can be reduced to normal, choose one can. You can choose to take oral Merrill Lynch or acetaminophen, you can also choose to take Merrill Lynch or acetaminophen corresponding composition of antipyretic suppositories, are to play a very good role in reducing fever, as long as you choose one, not both at the same time.