Lyophilized recombinant human brain natriuretic peptide for the intravenous treatment of patients with acute decompensated heart failure suffering from dyspnea at rest or with light activity. Specific medications should be used as prescribed by a physician. 1. Ingredients: Each vial of lyophilized recombinant human brain natriuretic peptide contains the active ingredient recombinant natriuretic peptide, and the inactive ingredients are mannitol, sodium dihydrogen phosphate, disodium hydrogen phosphate, and sodium chloride. 2. Adverse reactions: During the course of administration, some patients may experience adverse reactions such as nausea, headache, hypotension, cardiac arrhythmia, elevated creatinine and renal hypoplasia. 3. Precautions: Care should be taken to prevent allergic reactions that may occur when the product is administered by injection. It is not recommended for patients who are not suitable for the use of vasodilator drugs, such as: suffering from severe valvular stenosis, restrictive or obstructive cardiomyopathy, restrictive pericarditis and so on. In the course of drug administration, the main observation of the drug effect, if cardiogenic shock and respiratory failure occurs, it should be promptly rescued and treated. Specific medication needs to follow the doctor’s instructions.