Umebronium bromide vilanterol, or Umebronium bromide vilanterol inhalation powder aerosol, has the effect of bronchodilatation, and is mainly used to treat chronic obstructive pulmonary disease, and the use of this drug in a few cases may cause adverse reactions, such as infections, allergies, cardiovascular system reactions, dry mouth, urinary difficulties, as well as other adverse reactions. 1. Infection: the drug may increase the incidence of upper respiratory tract infections, pharyngitis and other related diseases. 2. Allergies: such as rash, itchy skin, and other allergic reactions. 3. cardiovascular system side effects: for example, the drug may lead to increased heart rate, panic, and may even induce the onset of certain cardiac arrhythmias. 4. Dry mouth and dysuria: the drug contains M-blockers, which may inhibit glandular secretion and aggravate the symptoms of prostatic hypertrophy, leading to dysuria. 5. Other adverse reactions: for example, patients with closed-angle glaucoma may induce exacerbation of glaucoma. Patients who are allergic to the active ingredient or any of the excipients of this product are prohibited. The drug should be used under the supervision of a physician.