Hello Tanya,

      I understand your concern and I am here to help you regarding your query and i appreciate your interest towards this !!

        Generally, Antipyretics are used in medication purposes to cure fever's, etc.., whereas Analgesics are used as painkillers. So, the simple logic is that we recommend 650 as painkillers sometimes also due to the chemicals used and hence, painkillers are jot used to treat fever's.

Also, do refer from official websites to get clearcut information.

Hope this helps you !!

Good luck ahead !!