Nifedipine controlled-release tablets need to be used regularly on a daily basis, not a day apart. Adverse reactions occurring during the use of the drug need to stop the drug and consult a doctor. Nifedipine controlled-release preparation compared with the ordinary preparation, due to the longer release time of the drug may be appropriate to reduce the frequency of medication, but also need to be used regularly every day. In adults, 30 mg once a day is recommended for the treatment of high blood pressure, unless otherwise indicated. The current authoritative dosing guidelines do not provide for every other day dosing, so it is not possible to use 30mg every other day, and it is recommended that you follow your doctor’s instructions for regular dosing. In the process of using nifedipine, if generalized edema, rash and other adverse reactions occur, it is recommended to stop the drug and consult a doctor. The use of the drug is prohibited in cases of drug allergy, cardiogenic shock due to the presence of hypotension, etc., taking rifampicin, pregnancy, lactation. Special attention should be paid to the fact that when taking control tablets, they should not be chewed or crushed, it is recommended to swallow them whole. Nifedipine should be used under the supervision of a clinician.