I am Australian 78 years old. I have no complaint that isn't normal for someone of my age. My husband has IPF only diagnosed, say, about 12 months ago - tho looking back perhaps had for several years. The problem at the moment is trying to find if somehow we can water-down/dilute the sticky phlegm which causes coughing morning and night. During day, coughing is minimal, seems to be buildup overnight (8 hours), and greater buildup over day (16 hours).