The generic name of Nezona is Mometasone Furoate Nasal Spray. The instructions do not specify whether it should be used at night or during the day, and the frequency of use is once a day, so it is recommended that it be used in advance of the time when symptoms are evident in order to better control the condition. Mometasone Furoate Nasal Spray, the main ingredient of which is mometasone furoate, is mainly used for the treatment of seasonal or perennial rhinitis in adolescents, adults, and children aged 3 to 11 years; it can also be used for the preventive treatment of patients 12 years of age or older with moderate-to-severe, seasonal allergic rhinitis. Adverse reactions such as headache, bloody mucus, pharyngitis, burning sensation in the nose, nasal irritation, and nasal ulcers may occur after administration. Use is contraindicated in patients with untreated localized infections of the nasal mucosa, as well as hypersensitivity to the components of the drug. Pregnant women, lactating women, children need to be careful with the use of the drug, it should be used under the supervision of a physician. It is forbidden to puncture the nozzle during use. Mometasone Furoate Nasal Spray does not have a clear regulation on the time of use, the frequency of use is once a day, and it is recommended to use it in advance of the time when the symptoms are obvious, in order to better control the condition. The drug should be used under the guidance of a professional physician, and should not be used on its own. If you have rhinitis or other diseases, it is recommended to go to the hospital to avoid delaying the condition.