Dafenacin Spray is an alpha-adrenergic receptor agonist, which has the effect of constricting the blood vessels of the nasal mucosa and can reduce congestion, thus improving the symptoms of nasal congestion. Dafenacin Spray is a nasal vasoconstrictor, clinically used for acute and chronic rhinitis, sinusitis, as well as allergic rhinitis, hypertrophic rhinitis and other symptoms caused by nasal congestion. Dafenacin Spray should not be used continuously for a long time in large quantities, and should not be used continuously for more than seven days, so as not to cause drug-induced rhinitis. At the same time for clinical coronary heart disease, hypertension, hyperthyroidism, and diabetes mellitus and other organic, metabolic disease patients should be used with caution.