One nifedipine a day cannot be stopped. Clinically, nifedipine belongs to the dihydropyridine class of calcium channel antagonists, can reduce calcium ions through the calcium channel into the cell, as well as specific effect on cardiomyocytes, coronary arteries, peripheral resistance vessels of the smooth muscle cells, and play a role in lowering blood pressure, is mainly used for hypertension, coronary heart disease treatment. Usually the drug needs to follow the doctor’s instructions for long-term medication, can not just stop taking the drug. After stopping the drug, the blood pressure may increase in a short period of time, and it is not easy to control. After taking the drug, dizziness, headache, edema and other discomforts may occur, and for the drug component allergy, cardiogenic shock is prohibited. Usually need to pay attention to monitor the blood pressure after taking the drug to avoid causing blood pressure too low. Secondly, for those who drive and operate machinery, it is necessary to pay attention to not carry out related work after taking the drug to avoid dizziness, resulting in memory loss and accidents. For pregnant women need to use the drug under the guidance of a doctor,, nursing women should stop taking the drug or stop breastfeeding. If you need to stop using nifedipine due to medical conditions, it is recommended to consult a doctor in time, and adjust the medication after the doctor’s comprehensive assessment of the condition.