
A 5-year-old child weighing 21 kg has symptoms of cough and fever, which may indicate a respiratory tract infection. The physician has recommended clarithromycin, but the parents are unsure about its administration and dosage.
A 5-year-old child weighing 21 kg has recently developed symptoms of cough and fever and has been preliminarily diagnosed with a respiratory tract infection. The parents are very concerned about the child's condition and hope to implement effective treatment measures. The physician has recommended treatment with clarithromycin; however, the parents are unfamiliar with the specific administration and dosage of this medication and hope to receive professional guidance.

Respiratory tract infections commonly occur during seasonal changes or when immunity is low. Clarithromycin is a broad-spectrum antibiotic frequently used to treat respiratory infections caused by susceptible bacteria.
Parents should administer the medication strictly according to the dosage prescribed by the doctor. The specific dosage should be determined by the physician based on the child's individual condition. The entire course of treatment should be completed, and medication should be continued as directed by the physician even if symptoms improve within a few days, to prevent the development of bacterial resistance. During the course of medication, parents should closely monitor the child's response. If any discomfort or side effects occur, medical advice should be sought promptly.