Nifedipine extended-release tablets are used as antihypertensive drugs with other cardiovascular effects, mainly in the following points: First, the role of lowering blood pressure, the antihypertensive effect is strong, the duration is relatively short, need to take twice a day. Second, improve myocardial blood supply, nifedipine extended-release tablets as a calcium antagonist, has the effect of improving myocardial blood supply, especially for variant angina pectoris better. It is recommended that when patients take the drug, the usage and dosage of the drug should be strictly in accordance with medical advice and instructions for use.