I am so sorry for your loss Dawn. GBM is a horrid disease. I too have a medical back ground and it is so hard to watch the unknown progress. We are hoping for a peaceful ending. Our sis in law does request tylenol for H/A every day - but she is still eating well, however is unable most of the time to follow directions. Is sleeping more than previously. We just have to support her hubby and help in any way we all can to keep her comfortable.