Angiotensin-converting enzyme inhibitors can lower blood pressure and improve heart function. For example, captopril and enalapril are angiotensin-converting enzyme inhibitors. They are commonly used clinically to lower blood pressure, especially in patients with hypertension who also have heart disease. These drugs are more effective in lowering blood pressure. However, they also have certain side effects, and many patients may experience dry cough after taking them. Patients who take this drug to lower blood pressure, if they develop a dry cough, they should go to the hospital promptly to rule out other diseases as the cause. If it is determined to be an adverse drug reaction, it is necessary to stop the drug and switch to another drug, such as Irbesartan, which can have a certain effect on lowering blood pressure and at the same time can avoid the occurrence of dry cough as a side effect. In addition to regular medication, patients with hypertension should also pay attention to improving their lifestyles to help control blood pressure.