bronchitis
"Had a horrible chest cold for over a month that turned in to bronchitis. Suffered through several Dr visits before after about 2 weeks being put on Z-Pak. I think this is the most wonderful antibiotic I've ever been on. By day 2 my energy is returning & today is day 4 & I've done more around the house than I have in over a month. No upset stomach or any side effects"