Azithromycin syrup is an antibiotic medication that belongs to a group of macrolide antibiotics. It is used to treat various bacterial infections of the nose, throat, tonsils, ear, lungs, skin, and eyes. Additionally, it can treat traveler?s diarrhea, sexually transmitted diseases, and malaria. The way it works is by blocking the formation of proteins required for bacterial growth and multiplication. It is approved for children 6 months or older and is a good option for kids with penicillin allergies.