Hello I am a bit confused and would like some opinions please. I have moderate COPD and am on symbicort and spiriva. On at least 2 occasions I have run out of spiriva and just relied on my symbicort. When I start taking my spiriva again I seem to cough a lot more and get SOB easier. Is this coincidence or is it possible to be allergic to spiriva please? I asked my COPD nurse and she said to just keep taking it. Thankyou.