I was on prescribed Inhalers around 2007 which I did not need.

2012 I ended up in hospital because I had 3/4 litre of fluid removed from around my heart area, after extensive tests it transpired i had myocardiopathy. a disorder in which the heart muscle is so strong that it does not relax enough to fill with the heart with blood and so has reduced pumping ability. Been on tablets ever since.
As for prescribed Inhalers turned out I never needed them.