I am on 20 different medications when I am healthy, some are inhailed, though most are pills. it is difficlut to tell exactly how many pills I take each day because I take 3-6 with everything I eat. I eat a LOT, so they add up quickly.
as for the oxygen, yes, I use oxygen at night, and when I start getting sick I need it all the time.
the airway clearance you are talking about is an old fasioned treatment, I have done it in the past, however I do more modern treatments now. there are many different air way clearance treatments, some work better for differnt people. personaly I use IPV. though I do have very clear memories of hanging over my mothers knees while she beat on my back and chest.
I hope I was able to help!