Erythromycin enteric-coated capsules can cause adverse reactions in the digestive system, with patients showing nausea, vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms. Some patients may also experience adverse reactions in the central nervous system, mainly manifesting as dizziness, headache, nausea, vomiting, general weakness, mental atrophy, lazy speech and other symptoms. Some patients may experience itchy skin or skin urticaria, and rarely may cause liver or kidney function damage. After taking more erythromycin capsules, patients are advised to drink more water to accelerate the excretion of the drug in the body through water to reduce the occurrence of adverse reactions.