I used the compression vest for about six months. As time went on I had increased chest pain, front and back, both sides. I was using it 20 minutes 2x daily. I stopped with the vest and the pain is returned to the intermittent pain I have had since diagnosis. I use the albuterol before I use the Nebulizer . Then I use Aerobika attached to the nebulizer (with 7%saline) and for the first time I am now able to get some sputum up. A huge difference for me.