Nifedipine, a commonly used drug in cardiovascular medicine, is a calcium antagonist antihypertensive drug that inhibits the inward flow of calcium ions in vascular smooth muscle and cardiac myocytes to achieve vasodilation and lower blood pressure. The common use of this drug is once a day at 10 mg, sometimes it can be adjusted to twice a day at 10 mg depending on the blood pressure, and the common adverse effects include headache, facial flushing, dizziness, hypotension, ankle edema, constipation, transient tachycardia, angina pectoris, etc. Some people may develop gingival hyperplasia after long-term use. During the treatment period, it is necessary to monitor changes in blood pressure, any adverse reactions such as headache and dizziness. Overall, it is a commonly used drug in cardiology that is well tolerated and has fewer adverse reactions, but it needs to be used orally therapeutically with the advice of a doctor.