Last year my inhaler was changed from Seretide to Fostair. I have found Fostair to be helpful to me but I find that I cannot always finish the inhaler. This time there are 21 puff left in there. Last time I took the whole inhaler but the time before it stopped at 27. It would seem to me to be every other inhaler that just stops. Has anyone using Fostair had this issue or is it just me? I have to make an appointment with the asthma nurse for my review and I am going to mention it then.