I have worn the vest for years for 30 minutes once or twice a day presribed by my doctor. I have not been able to tell that the vest helps bring up anything. I am one of those that have never been able to get sputum up.

After reading messages on this website, I tried several over the counter things and now can get lots of sputum up.

But, even though I get a lot up, it's not enough. I just had a bronchoscopy after six months and my pulmonoligist said I was full up to my neck. They found pseudomonas and I am on azithromycin Mon-Wed-Fri for three months, possibly rest of life.

I am a firm believer in bronchoscopies. We need to have them every several months to find out what is going on down in our chest.

Stay Positive.