Antibiotics for pneumonia include Zithromax (azithromycin), Biaxin (clarithromycin), and Erythrocin (erythromycin). Azithromycin is often the first-line treatment since it is effective against many ...

Azithromycin can cause side effects that range from mild to serious. More common side effects include nausea, vomiting, and abdominal pain. If azithromycin’s side effects become difficult to tolerate, ...