I have very recently swapped from seretide 250 to Flostair 100/6. Started Tuesday and asthma is getting worse again. I thought it was just the heat but no barely two days of being off seretide my chest is start to ache and I reaching for my ventolin. Nuts I thought so I going to put myself back on seretide. I have made an appointment with one of my asthma nurses next Thursday. I was hoping to get on to a newer faster acting combination inhaler but nope my body is particular and old fashioned. The asthma nurse I saw last week 12 week review doesn't mind if I am on an'old' drug as long as it works. Sigh? !