most common side effect of azithromycin
Zithromax Side Effects. Side effects from using Zithromax and other azithromycin drugs range from mild to life-threatening. Among the most common side effects, users have experienced diarrhea, nervousness, nausea, vomiting, and heartburn.
A: 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.