Antibiotics, such as cefaclor, cefixime and cefdinir.

First, these three categories belong to cephalosporins. Clozapine belongs to the second generation cephalosporin, while clotrimazole belongs to the third generation cephalosporin. The side effects of clozapine are greater than the latter two, and the side effects of the third generation cephalosporin are smaller. (Cefexoxime has granule preparation for children, which can be selected. )

Second, roxithromycin and azithromycin belong to macrolides. Features: small side effects, narrow antibacterial spectrum, mainly used for G+ bacteria.

Antibiotics usually take 7 days as a course of treatment. If the condition does not improve, consider the possibility of drug resistance and change the medicine. If the condition improves, but not all, you can continue to use antibiotics with small side effects. Generally, one course of treatment is enough for acute infection, and long-term treatment is needed for chronic infection.

Fourth, the possibility of cross-resistance of different kinds of antibiotics is small. Some drugs are not used once, but can't be used next time, and their drug resistance is not so strong.