Furosemide nasal drops are generally recommended to be administered 3-4 times a day, which means that they can usually be reapplied every 6-8 hours. This drug is mainly used to relieve nasal congestion caused by congestion and swelling of the nasal mucosa. Its main component is ephedrine, which can directly motorize the corresponding receptors of vascular smooth muscle, and can cause vasoconstriction of skin mucosa and internal organs, which can reduce nasal congestion when used in the nose, and can relieve nasal congestion caused by cold and allergy. Therefore, this drug is mainly used in clinical practice to relieve nasal congestion caused by congestion and swelling of the nasal mucosa. This drug is generally contraindicated for patients with dry nasal cavity and atrophic rhinitis, and this drug is not recommended for long-term use, generally speaking, it should not be used continuously for more than three days, otherwise it may produce rebound phenomenon, which means that more serious nasal congestion may occur. In short, the general recommended usage of this drug is 3-4 times a day, that is, every 6-8 hours can be reapplied, the specific usage, medication course must follow the advice of the doctor.