Everytime I do an asthma test I fail it. Turns out I dont have asthma but when the volcanic ash cloud came over from Iceland a few years back I almost died, went blue for lack of breath so I have had these inhalers ever since. Preventer and the other for daily use. Dont need the last one often but all of a sudden anywhere any place I lose my breath. I was using these even when I ran a tennis team and played 5 times a week. Its all a bit vague but I dont want to stop taking them even though I get the impression they are trying hard to cut NHS expenses.