Nifedipine Extended-Release Tablets No.1 is an antihypertensive drug, mainly used in the treatment of patients with hypertension. The dosage of Nifedipine Extended-Release Tablets No.1 is 10mg/tablet, the main effect is to inhibit the inward flow of calcium ions, with the effect of dilation of coronary arteries and peripheral blood vessels, the main indications are hypertension and coronary artery disease, for hypertension combined with coronary artery disease, the oral Nifedipine Extended-Release Tablets are more appropriate, the specific oral dosage to comply with the guidance of the doctor. The adverse reactions of nifedipine extended-release tablets include lower limb edema, dry stools, tachycardia, flushing, etc. It is forbidden for patients who are allergic to the drug components, have severe aortic stenosis, cardiogenic shock, or are taking rifampicin. When taking oral nifedipine extended-release tablets to lower blood pressure, choose the appropriate dose under the guidance of a physician.