It works. According to the query of 39 Health Network, Nessu ester is a medical insurance drug and can be reimbursed. For patients who have used Nessunide for several months or longer, their nasal mucosa should be examined regularly. If there is a local fungal infection in the nasopharynx, they should stop using Nessunide or need appropriate treatment, and there is persistent nasopharyngeal irritation.