I started the 3% about a week and a half ago and I get so much mucus up and also nose stuff that I couldn't possibly use the vest at the same time because I am coughing and blowing my nose almost constantly (it seems to open up the sinuses). (and just forget the arobika) I lose a lot of the 3% time due to this coughing and nose blowing but it seems to do the job. Afterwards I use the vest for 30 min and not much is left to come out though usually some does. I still cough and nose blow for an hour or so afterwards. Mornings are rough. Evenings not nearly as bad. I normally use albuterol inhaler when I get up which is maybe an hour or more before I do the 3% and vest.