I've had COPD for years, but have never had shortness of breath as a problem except when I tried to run or climb a steep hill. Now I have breathing problems with only slight exertion or none at all. I would like to know if the change of medication a few months ago might account for the new breathing problem or should I see it as probably mere coincidence that the two things happened within the same recent time frame. I wonder if I should try returning to the old combination of Spiriva and Advair. Is there an advantage to Anoro, other than that it is one drug rather than two and therefore more convenient?