This is not really a side effect. I had been taking Advair 250/50 twice a day for about 10 months for exercise induced asthma. It worked really well for about 3 or 4 months. Then for the next 2 or 3 months it worked with moderate success. For the past 2 months or so it was not working at all so I stopped taking it. I had the usual horse voice and mild cough which I put up with when it was working. Anybody have the same experience