Comparison of nitrendipine and cilazapril in patients with hypertension and non-insulin-dependent diabetes mellitus.

The metabolic and cardiovascular effects of nitrendipine and cilazapril in patients who have elevated blood pressure and non-insulin-dependent diabetes mellitus (NIDDM) were compared. After at least 6 weeks of a washout period, 20 NIDDM patients who had diastolic blood pressure in the range of 90-105 mm Hg received a single-blind placebo for 4 weeks and then were randomized to receive 20 mg nitrendipine once daily and 5 mg cilazapril once daily each for 12 weeks according to a crossover, double-blind procedure. Nitrendipine and cilazapril reduced diastolic blood pressure levels 12% and 13%, left ventricular mass index (LVMI) levels 13% and 12%, and raised whole glucose disposal levels 18% and 19.5%, respectively. Only nitrendipine reduced glucose-stimulated insulin levels. Nitrendipine is as effective as cilazapril in lowering diastolic blood pressure and LVMI levels and in increasing glucose disposal levels in these patients.