gerd
"Started taking this about 8 years ago after developing an ulcer from taking Aleve.
Was fine for a few years, with only flatulance and loose bowel movements.  For the last 3 years, I started developing asthma symptoms (phlegm in throat and lungs, coughing).  Stopping Protonix cleared it up.  Took 1 pill again and the asthma started again.  Too bad, I really liked this medication."