With cystic fibrosis what do you use to expel mucus from lungs?

Cilia, hydration, Rx. Mucus lubricates and protects the linings of the airways, digestive system, reproductive system, and other organs and tissues. But in cystic fibrosis, it is abnormally thick and sticky. Thus, it can obstruct the airways, etc. Keeping well to over hydrated, ned's like mucormyst, abx when appropriate can help.