Had an asthma review with the nurse today as I have recently felt that my asthma isn't under control. I have been experiencing shortness of breath and chest tightness (no cough or wheeze) and having to use salbutamol more than normal. Peak flow was normal today so she didn't feel my asthma was bad. I also have allergic rhinitis/sinusitis and that is what's causing most of my asthma symptoms. However, she is considering changing my preventer inhaler from seretide 250 to symbicort. Would anyone recommend symbicort or find it more effective?