How many times a day should sustained-release nifedipine tablets be taken?

The frequency of taking sustained-release nifedipine tablets per day is usually determined based on the patient's specific condition. Generally, the standard dosage regimen for sustained-release nifedipine is twice daily, 20 mg each time, based on its duration of action of approximately 10–12 hours. For some patients whose blood pressure remains elevated throughout the day or experiences significant fluctuations, the frequency may need to be increased to three times daily, or even more, in order to achieve effective blood pressure control. The frequency and dosage of sustained-release nifedipine should be adjusted by a physician according to the patient's specific medical condition and blood pressure status. Patients must not alter the dosage or frequency of medication on their own. During treatment with sustained-release nifedipine, patients should regularly monitor their blood pressure so that the physician can promptly assess blood pressure control and make necessary adjustments.