We commonly use  acetaminophen for fever, headache as an analgesic and antipyretic. It is also used in  children for the purpose. It is considered as a safe drug for fever and chill; alone or in combination with other drugs.
An article published in the Journal of the American Academy of Pediatrics, shows that use of acetaminophen in pediatric age group having asthma or predisposed to asthma may worsen their condition. Read more; http://clinicianonnet.blogspot.com/2011/12/use-of-acetaminophen-in-children.html