以往用硝苯地平治疗高血压通常是每天服药3次,最近新研制一种口服的硝苯地平缓释片剂,作者对该片剂的抗高血压效果及副作用进行了研究。实验在两个中心同时进行。受试者为男性及非孕期、哺乳期妇女,年龄21～70岁,患有轻度到中度原发性高血压,无并发症。平均舒张压12.6～15.8 kPa(95～119mmHg)。治疗开始前先给病人服用3～6周安慰剂(单盲法),以消除以前服药的影响,治 In the past with nifedipine treatment of hypertension is usually taken 3 times a day, recently developed an oral nifedipine sustained-release tablets, the authors of the tablet anti-hypertensive effects and side effects were studied. Experiments were conducted simultaneously in both centers. Subjects for men and non-pregnant, lactating women, aged 21 to 70 years, suffering from mild to moderate essential hypertension without complications. The average diastolic blood pressure 12.6 ~ 15.8 kPa (95 ~ 119mmHg). Patients are given 3 to 6 weeks of placebo (single-blind) before treatment begins to eliminate the effects of previous medications