That is hard to say. It usually does not make me cough or bring up anything. I stopped using it daily except in the case of a flare and then it seemed to help some. I had a recent bad flare and was advised to use at least twice a day by my doctors, flare or not. I find the Aerobika works really well at bringing up mucus, so I use that too. Hope that helps.

I have used the Afflovest on the medium setting for a little over a year. Medicare pays. The respiratory therapist working with the UTexas Tyler Pulmonary Clinic instructed me to use it AFTER my nebulizing, coughing( including Huff Coughing, and using the Aerobika and my nebulizer). For the last part of the vest 'session'- Drainage- I lay on my left side on the bed or couch. I have Bronchiectasis and Myco Abscessus abscessus. I find that this all works and helps me. Good Luck