I had a nebulizer for a bit . I gave it back to the oxygen co. My problem was that the only words spoken to me were to use it every 4 hours . I took note of the amount of albuterol that I would be using , and decided for myself that I would not use it . I also took note of the preparation time , and the cleaning that would be needed . Those tasks alone would take 6 hours a day. For phlegm, I take Musinex type products . It works for now . I am getting over a sinus cold and bronchitis . It lasted 14 days . I think I am almost back to regular copd levels now . My oxygen use is the same as before it . Blessed Be, Crystalina