Budesonide formoterol powder inhaler cannot treat all causes of cough, and is mainly used clinically for the treatment of cough caused by allergic cough, cough variant asthma, bronchial asthma, and chronic obstructive pulmonary disease. 1. Budesonide formoterol powder inhaler is a kind of compound preparation, whose components are budesonide and formoterol fumarate, of which budesonide is a kind of glucocorticoid with anti-inflammatory effect, while formoterol is a kind of selective β2-adrenergic agonist with long-lasting diastolic effect on bronchial smooth muscle. 2. This product is clinically used for the treatment of allergic cough, cough variant asthma, bronchial asthma, and symptoms (such as wheezing, cough, dyspnea, etc.) caused by chronic obstructive pulmonary disease. 3. During administration, adverse reactions such as palpitations, headache, tremor, mild irritation of the pharynx, etc. may occur. It is contraindicated for those who are allergic to the ingredients contained in this product or those who have allergic reactions to the inhalation of lactose (which contains a small amount of cow’s milk proteins). In addition, athletes, diabetic patients, patients with thyrotoxicosis, etc., should be cautious of the use of this product. If there is a need for medication, it is recommended to go to the hospital in a timely manner, after clarifying the cause of cough, follow the doctor’s instructions to use medication, to avoid blind use of medication.