Well, the neb is that fast - my huffing and coughing take anywhere from 5-20 minutes after that, depending on how gunky my lungs are. With 7% saline, and daily doses of Mucinex and N-acetyl cysteine, usually I am done coughing within 5-10 minutes. If I skip a day of meds or nebbing, or if my allergies are bad, it gets longer.
This morning I am living dangerously, with no neb, just to see how things go (but I did cough up a bunch of stuff with a few deep breaths and a few huffs.) By the way, once I start coughing stuff up easily, I sometimes don't finish all the solution - it depends on the day. Also, I find the neb and coughing work better after my morning walk or 30-45 minutes or yoga of 30 minutes. Seems the extra breathing gets is all moving faster.
Sue