Abstract:
:A new polymeric matrix technology provides a sustained-release formulation of diltiazem hydrochloride (diltiazem SR) suitable for once-daily therapy. The efficacy and safety of diltiazem SR were evaluated in a multicenter, randomized, double-blind, placebo-controlled, parallel-group study. After a single-blind, placebo lead-in period, 275 patients with mild to moderate essential hypertension were assigned to receive placebo or diltiazem SR 120, 240, 360, or 480 mg once daily for 4 weeks. The efficacy evaluation was based on office and 24-hour ambulatory blood pressure monitoring. Twenty-four hours after the last dose in the 4-week, double-blind treatment period, the mean reduction from baseline in supine diastolic blood pressure ranged from 5.1 to 10.6 mm Hg in the diltiazem SR 120- to 480-mg groups, resulting in a significant linear trend across all treatments (P less than .001). Reductions in systolic blood pressure were similar. Ambulatory blood pressure monitoring, performed in 138 patients, confirmed the dose-response relationship and showed consistent antihypertensive activity throughout the 24-hour dosing interval. The percentage of patients reporting adverse events was similar in the placebo- and active-treated groups. The results of this study indicate that diltiazem SR is well tolerated, lowers blood pressure in a dose-related manner, and provides sustained activity throughout the 24-hour dosing interval.
journal_name
J Clin Pharmacoljournal_title
Journal of clinical pharmacologyauthors
Whelton A,Eff J,Magner DJdoi
10.1002/j.1552-4604.1992.tb03887.xsubject
Has Abstractpub_date
1992-09-01 00:00:00pages
808-15issue
9eissn
0091-2700issn
1552-4604journal_volume
32pub_type
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