Symbicort is commonly known as budesonide formoterol powder inhaler. There is no contraindication to the use of budesonide formoterol powder inhaler and montelukast sodium tablets, and they can be used together under the guidance of a doctor. 1. Budesonide formoterol powder inhaler is a multi-dose powder inhaler, which needs to be adjusted in dosage and inhaled directly when used. Budesonide formoterol powder inhaler is an adrenergic agent used for the routine treatment of asthmatics who require the combined application of inhaled corticosteroids and long-acting beta2-agonists. 2. Montelukast Sodium Tablets is a potent oral preparation that significantly improves inflammatory markers in asthma. It is indicated for the prophylaxis and long-term treatment of asthma in adults aged 15 years and older, including the prevention of daytime and nocturnal asthma symptoms, the treatment of patients with aspirin-sensitive asthma, and the prevention of exercise-induced bronchoconstriction, and is also used for the reduction of inflammation caused by seasonal allergic rhinitis. 3. The most common adverse reactions to budesonide formoterol powder inhaler are tremor, palpitations, and headache, which usually diminish or disappear within a few days of treatment. Montelukast sodium tablets are generally well tolerated. Patients may experience hypersensitivity reactions such as rash, itching, hives, and possibly nausea and diarrhea during administration, which are generally mild and usually do not require termination of therapy. 4. budesonide formoterol powder inhaler and montelukast sodium tablets have no contraindications, for patients who meet the indications of these two drugs, can be used at the same time under the guidance of the doctor. It is recommended to follow the doctor’s instructions to avoid ineffective treatment or serious effects.