First of all, cephalosporins are only divided into 1, 2 and 3 generations, and clarithromycin belongs to the macrolide class of drugs, that is, we usually say erythromycin drugs. It is mainly used for the treatment of respiratory tract infections, otitis media, nasopharyngitis, skin and soft tissue infections, Mycoplasma pneumoniae infections and so on. Clarithromycin is a commonly used clinical antibiotic, is a broad-spectrum antibiotic, belongs to the first line of drugs, can be eaten on an empty stomach, can also be taken with milk or food, will not affect the effect of the drug. But for a history of allergy to erythromycin drugs, pregnant women, lactating women Clarithromycin is prohibited.