The oral dose of azithromycin for adults is 0.25 g/dose, 1 time/day, and the 1st oral dose needs to be doubled to 0.5 g/dose orally. Azithromycin is an antibacterial drug for systemic use and can be used for various infections caused by sensitive bacterial infections. Azithromycin can be chosen for treatment when there is mycoplasma infection. There are respiratory tract infections that cause coughing and coughing up sputum, and azithromycin is also needed and can be taken orally for 5 consecutive days. If you have bronchitis, pneumonia and other lower respiratory tract infections, you also need to use it for a longer period of time in moderation under the guidance of a doctor if the symptoms are more serious. Azithromycin can be taken orally after meals or at the same time with food, which can reduce the irritation of the drug to the stomach and intestines.