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J Cardiovasc Pharmacol. 1997 Oct;30(4):497-503.

Combined therapy with benazepril and amlodipine in the treatment of hypertension inadequately controlled by an ACE inhibitor alone.

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1
Department of Internal Medicine and Therapeutics, University of Pavia, Italy.

Abstract

In a multicenter, randomized, double-blind, placebo-controlled study, we evaluated the efficacy and tolerability of the combination of benazepril, 10 mg, and amlodipine, 2.5 or 5 mg once daily, compared with benazepril, 10 mg, monotherapy in patients with hypertension inadequately controlled with angiotensin-converting enzyme (ACE)-inhibitor monotherapy. After a 2-week placebo and 4-week single-blind benazepril, 10 mg once daily, run-in period, 448 patients, 213 men and 235 women, aged 24-73 years (mean, 55 years), with mean diastolic blood pressure (DBP) > or =95 and < or =120 mm Hg at the end of the benazepril run-in period, were randomized to receive one of the following treatments once daily for 8 weeks: (a) benazepril, 10 mg, plus placebo (BZ10); (b) benazepril, 10 mg, plus amlodipine, 2.5 mg (BZ10/AML2.5); or (c) benazepril, 10 mg, plus amlodipine, 5 mg (BZ10/AML5). Before the patients were admitted to the trial, at the end of the placebo run-in and the benazepril run-in period and at the end of weeks 4 and 8 of the treatment period, sitting and standing blood pressure (BP), heart rate (HR), and body weight were measured 22-26 h after the intake of the trial medication. Both BZ10/AML2.5 and BZ10/AML5 combinations showed better antihypertensive activity than did BZ10 monotherapy at the terminal visit as demonstrated by (a) the 24-h postdosing sitting and standing systolic BP (SBP) and DBP values, which were statistically lower with combination therapy than with BZ10; (b) the success rate, which was statistically higher with both the combinations (69.2% in the BZ10/AML2.5 and 65.8% in the BZ10/AML5 group) compared with the BZ10 group (40.5%). The tolerability was good in the three treatment groups. No significant abnormal laboratory data were detected. There was no difference in efficacy and safety/tolerability between the BZ10/AML2.5 and BZ10/AML5 groups.

PMID:
9335410
[Indexed for MEDLINE]
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