I have given my 4 yr old flexon and as fever did not come down after two hours ..i gave meftal p ..is that ok ?

A kid with a fever producing illness will seldom if ever be fever free in 2 hours. This site does not give your location, but the med names you cited are not known to us. Low grade fever is well tolerated and helps speed blood flow that brings the body's natural healing factors around quicker. I rarely treat fever unless the kid has pain or lethargy. You are welcome to clarify what bothers you.