There is a difference between roxithromycin tablets and erythromycin. Roxithromycin belongs to the new generation of macrolide antibiotics, which will have relatively mild adverse reactions. Both erythromycin and roxithromycin belong to macrolide antibiotics, and the mechanism of action is the same. They mainly inhibit the protein synthesis of bacteria, and are very effective for Gram-positive bacteria, anaerobic bacteria, mycoplasma and chlamydia infections. If patients are allergic to penicillin, they can consider using roxithromycin tablets or erythromycin instead. Be sure to drink more water after medication, which can effectively promote the absorption and metabolism of the drug, and be sure not to drink alcohol during medication to avoid reactions. For inflammatory diseases, the patient’s symptoms should improve after a week or so of medication, and it is recommended to exercise more in life to improve their resistance.