Does your sister also see a CF specialist doctor. That can make a big difference in the care she will be receiving. IMHO unless someone specialises in cf then they do not know the ins and outs of it, will not be up-to-date with the best care approaches. A natural doctor while this might sound good on the surface, generally know nothing about CF and can take some quite dangerous approaches if they aren't fully clued up on cf. Also, natural medicine is stuff that hasn't been quality tested. All medicines started out natural, and then they were changed and tested to be made safer by specialist researchers.
Is your sister on dnase or hypertonic saline, antibiotics, inhalers? All of these will help with a constant cough. When my cough is so bad it feels I'm drowning that's when I go into hospital for iv antibiotics and 2 weeks of intense physio and tlc. That works for me and gives me a few weeks break from coughing.
To ease it before bed I have my dnase nebuliser, hot shower as the steam helps, bricanyl inhaler, acapella physio, colomycin nebuliser mixed with Ventolin, symbicort and then a hot coffee made with just milk as it soothes my throat and eases the urge to cough when I lay down. During the day a have a sweet hot cup of tea to ease coughing fits or a spoonful of honey can sometimes help too.
Coughing is a part of CF and it can be really tiring and annoying.
Hope this helps you suggest some ideas for you're sister.
Well see you are assuming she has it. This is what is weird most of all. BOTH our parents came back NEGATIVE for the CF gene. And out of the doctors and specialist she went to almost all of them say they think the blood test may have come back false positive. They all say they think it could possibly be parasites. And when they mentioned that I did remember that one of my friends was treated a long time ago as he suffered from a nagging cough and they saw Cysts in his lungs. When they did lung sugery on him they found parasites actually living in his lungs. So we don't know yet. Our entire family has never ever had a problem with Cystic Fibrosis we've never even heard about
it. And a couple of the doctors say another weird thing is her age. She is a LOT older and the doctors said Cystic Fibrosis doesn't develop it's a genetic issue yet she seemed to develop a cough. Honestly, I'm so confused I could pass out.