After a month on Lisinopril, I started noticing shortness of breath. Then awoke one morning with pain in shoulder and numbness in arm - thought I was having a heart attack! ER diagnosis was asthma. Advair, methylprednisone (steroids) and albuterol helped at first, but after two weeks, breathing problems all came back. Started using a nebulizer which provided only short term relief and was then referred to a pulmonary specialist. He put my on Advair, Singulair (another side effect horror story), Nasonex, Intal inhaler, albuterol inhaler, the nebulizer as needed. Upon follow up two weeks later, it was all still going on! He rx'd another prednisone pack, but NOW he notices in chart that I was taking Lisinopril, which he said is KNOWN to cause breathing problems - and to stop taking it, immediately. Within one week, all of these horrendous asthma problems WERE GONE. It's been two weeks and I have since discontinued ALL asthma medications - everything - not to mention the Lisinopril. How could prescribing doctor and ER doctor mis-diagnose Linsinopril side effects for asthma! How could I? I would like to think that if they're going to prescribe this stuff, they would be familiar with possible side effects as such. I'm just lucky this stuff didn't kill me and that I didn't get rid of my cat!