Hi Dr. I m Andrew from Malaysia. My dad was attacked by stroke caused by swelling brain 2 years ago. Recently he use to have a lot phlegm and causes him to cough frequently. We brought him to his Dr and given antibiotics, don t really work. Brought him to clinic, given soluble pills to dissolve the phlegm through bowel...still no result. The problem is when the phlegm comes till his throat, he don t know how to spit it out. Poor guy s sleep always disturbed by this cough...need your advise how to solve the problem. Thanks.