Zithromax is used to treat many different types of infections caused by bacteria, such as respiratory infections, skin infections, ear infections, and sexually transmitted diseases.
Zithromax may also be used for purposes not listed in this medication guide.
You should not use Zithromax if you have ever had jaundice or liver problems caused by taking azithromycin.
You should not use Zithromax if you are allergic to azithromycin or to similar drugs such as clarithromycin, erythromycin, or telithromycin.
To make sure Zithromax is safe for you, tell your doctor if you have:
a heart rhythm disorder; or
a history of Long QT syndrome.
It is not known whether azithromycin passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
Do not give Zithromax to a child younger than 6 months old.
Older adults may be more likely to have side effects on heart rhythm, including a life-threatening fast heart rate.