Erythromycin ointment rubbing the nasal cavity can effectively relieve dry nasal mucosa or chronic rhinitis. How long to use continuously can not be generalized, need to be identified according to the patient’s own situation and recovery, if the patient’s symptoms disappeared can be discontinued. But erythromycin ointment is best not to use more than a week, may produce drug resistance, after applying the symptoms are not relieved under the guidance of a doctor is recommended to change the drug. Erythromycin ointment can also be used for the treatment of suppurative skin diseases such as impetigo, small burns, ulcer surface infections and acne vulgaris. There may be some adverse reactions such as irritation or allergic reactions after application. It is forbidden for those who are allergic to the product, allergic persons should be cautious, if there is a burning sensation, itching, redness and swelling at the site of application of the drug should be discontinued, topical medication for washing, consult with a physician. The contraindications of erythromycin ointment are not clear. If you need to use, please consult a professional doctor, follow the doctor’s instructions, reasonable use of medication.