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 it or to similar drugs such as erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin, Pediazole), clarithromycin (Biaxin), telithromycin (Ketek), or troleandomycin (Tao).
To make sure you can safely take Zithromax, tell your doctor if you have any of these other conditions:
- liver disease;
- kidney disease;
- myasthenia gravis;
- a heart rhythm disorder; or
- a history of Long QT syndrome.
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FDA pregnancy category B. Zithromax is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. It is not known whether azithromycin passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. Do not give Zithromax to a child younger than 6 months old.