I've been using epiduo for just over two months now, & I've had good results on my face so far.
However, since coming off the pill I now have horrible chest & back acne. I was wondering if anybody knew if epiduo would have the same effect on my chest/back & whether anyone had had good results using it there?
Actually when i went off Epiduo because it was way too much for my sensitive face- i started aczone etc. After I sometimes get a cluster of breakouts on my back well i would use the epiduo that i had left on my back and it seemed to work pretty well. use it at night only if you are going to try because it will bleach your shirt! so either use a crappy shirt you dont like or wait for it to dry before you get dressed. Also try not to slather it all on there- i spot treat with a large pea size on the bad areas. But asking your derm is your best bet because im no doc! 
good luck
!