What is zithromax used to treat?
Azithromycin is also used to treat lung and other respiratory infections, such as bronchitis, sinusitis, community acquired pneumonia, some cases of chronic obstructive pulmonary disease (COPD), and whooping cough (pertussis).: Z-Pak (azithromycin) is a macrolide antibiotic which is used to treat various bacterial infections. The most common side effects with Z-Pak are diarrhea and nausea. Other side effects with Z-Pak include photosensitivity or sensitivity to the sun and UV radiation.