Please help - I am helping care for my brother who has tongue cancer and is at the end of his 5th week of radiation - he's also had two chemo treatments. He is having a terrible time the last couple of days with increasing amounts of thick phlegm. He has been using the salt and soda rinse faithfully and drinking water, but it just seems to be getting worse. Any suggestions? He is so fatigued as it is breaking up his sleep and getting very discouraged.