I had a bad case of bronchitis that didn't clear up after the antibiotics. My new doc gave me advair and said I had undiagnosed asthma. I am getting BAD headaches- migraines. My eyes feel like they are going to pop right out of my head from the pressure and pain. I also have blurred vision when the headaches occur. I've only been using it for about 9 days and I'm going to stop after reading the other posts on this site. It seems that compared to other users I'm getting off rather easy.