Chlamydia with azithromycin or clarithromycin have therapeutic effects, need to follow the doctor’s advice according to individual circumstances. Azithromycin can be used for infectious diseases caused by Staphylococcus aureus, hemolytic streptococcus, Streptococcus pneumoniae, Streptococcus pyogenes, Chlamydia, Mycoplasma and so on. Adverse reactions to this product can be seen abdominal pain, diarrhea, nausea, vomiting, rash and so on. This product is contraindicated for those who are allergic to azithromycin, ketolactones, and other macrolides. Clarithromycin can be used for infectious diseases caused by Staphylococcus aureus, Streptococcus pneumoniae, Streptococcus pyogenes, Haemophilus influenzae, Haemophilus parainfluenzae, Gonococcus gonorrhoeae, Legionella pneumophila, Chlamydia pneumoniae, Mycoplasma pneumoniae and so on. Clarithromycin adverse reactions can be seen diarrhea, nausea, abdominal pain, vomiting, abnormal taste. This product is prohibited for those who are allergic to macrolides, renal insufficiency combined with severe hepatic insufficiency, hypokalemia and so on. Clarithromycin is forbidden to be combined with astemizole, pimozide, cisapride, terfenadine, midazolam and other drugs. Therefore, azithromycin or clarithromycin can be used to treat chlamydial infections, but the choice of medication should be made by the doctor according to the individual’s specific situation.