Azithromycin is a macrolide antibiotic, which can be used to treat pharyngitis, tonsillitis, otitis media and pneumonia caused by sensitive bacteria. Azithromycin has many dosage forms, including azithromycin for injection, azithromycin tablets and azithromycin dry suspension, according to the different dosage forms, the dosage for pediatric use is also different. 1. Azithromycin Tablets: According to the different purposes of medication, the dosage of pediatric Azithromycin Tablets is different. For the treatment of otitis media, pneumonia, the first day, according to the body weight of 10mg/kg tonic, the second to five days, daily according to the body weight of 5mg/kg tonic; used in the treatment of pediatric pharyngitis, tonsillitis, a day according to the body weight of 12mg/kg tonic, used for five days. The maximum amount of a day should not exceed 0.5g. 2. Azithromycin Dry Suspension: There are two dosage regimens for Dry Suspension, for a course of three days, the total dosage is 30mg/kg, given for three consecutive days, once a day, with a dosage of 10mg/kg; for a course of five days, the total dosage is still 30mg/kg, given for five consecutive days, once a day, with a dosage of 10mg/kg on the first day, 5mg/kg on days 2 to 5. 3. Azithromycin for injection: pediatric azithromycin for injection is usually calculated according to 10mg/kg, the maximum dosage does not exceed 0.5 grams, once a day IV, at least 2 days. Azithromycin may have adverse effects such as gastrointestinal reactions, rash, itching and headache, and is also contraindicated in people. Azithromycin should be used in children under the supervision of a doctor and in accordance with medical advice.