Prescribed Naproxine and co codomal and a small number of decongestant (Now finished) from my GP last Friday 20th Jan. - Following 3 days of flu symtoms and increased chronic back ache. - I went back to work on Tuesday. But although I have cut down on the others I just had one Naproxine 500mg yesterday morning I have felt like a zombie all weekend - tired out depressed and even some chest pain today which thankfully seems to be now lifting. I can now feel my back pain returning so what should I do would there be other pain killers or anti - inflammtories that may work better ? ( From my GP)