have been on advair 4 yrs, did'nt relize that my throat and mouth problem until later i have blisters in my mouth and throat can't eat without a lot of pain i have been reduced to eating liquids and they hurt just as badi also have loss of voice very dry mouth,headache,muscle pain and the sores have reached down into the back of my throat i am going to stop takeing advair for a few days and see what happens my doctor says he don't know what the problem is well i think i just found out thanks to this web sight thank you for posting it