The dosage of Roxithromycin is different for different groups of people, usually one capsule of Roxithromycin 150 mg twice a day or two capsules once a day for normal adults. Dosage adjustment is required for special populations. Roxithromycin belongs to the class of macrolides, commonly used in the treatment of infections caused by purulent streptococci, sensitive bacteria, mycoplasma, chlamydia. For patients with severe cirrhosis and severe renal insufficiency who need to use Roxithromycin for treatment, dose adjustment is required, 150 mg one capsule once a day. The dosage for children is 2.5-5mg/kg per time, twice a day. Roxithromycin has certain side effects, such as gastrointestinal reactions, hepatic impairment, renal impairment, etc., must be strictly in accordance with the doctor’s instructions under the guidance of the doctor.