I started using tudorza 12 days ago. I must say, I'm quite impressed so far. I try to go to the gym everyday. I usually do 2 miles but on 2.5, and sometimes struggle. Today I did 2miles on 2.9 and was hardly out of breath. I also use symbicort for my asthma. I tried spiriva for my copd, but it actually made my breathing worse. Hope this tudorza continues to work this well. I thought id share this with everyone....will keep posting .