bronchitis
"I had been suffering from what I thought to be bronchitis for several months.  I would cough sputum for about 1/2 hour in the morning when I awoke and after I laid down at night.  I've tried over the counter and another antibiotic from the doctor.  After going back to the doctor because nothing was working, he prescribed Levofloxacin, 500 mg/daily.  Within a few days I could tell the infection was clearing.  Within a week, the coughing and sputum was gone."