Budesonide is an over-the-counter drug commonly used in otolaryngology, a glucocorticoid class of drugs with potent local anti-inflammatory and anti-allergic effects, mostly used in perennial or seasonal allergic rhinitis, allergic pharyngitis, and even allergic asthma. Specific usage: First of all, nasal spray into the nasal cavity. Generally, the left hand sprays the right nostril and the right hand sprays the left nostril, that is, spraying one side of the nostril, avoiding direct spraying to the nasal septum. Adults start with 2 sprays in each nostril, once in the morning and once in the evening, and generally the maximum dosage does not exceed 8 sprays per day. After the symptoms are relieved, each nostril should be sprayed once a day with 1 spray each time, and the dosage for children over 6 years old is the same as that for adults.