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  • Title: Barnidipine, a novel calcium antagonist for once-daily treatment of hypertension: a multicenter, double-blind, placebo-controlled, dose-ranging study. Dutch Barnidipine Multicenter Study Group.
    Author: Hart W, Holwerda NJ.
    Journal: Cardiovasc Drugs Ther; 1997 Nov; 11(5):637-43. PubMed ID: 9493701.
    Abstract:
    The antihypertensive effects and tolerance of once-daily barnidipine, a novel dihydropyridine calcium antagonist, were evaluated. A total of 190 patients with a sitting diastolic blood pressure (DBP) of 95-114 mmHg were investigated in this multicenter, double-blind, placebo-controlled, dose-ranging study. After a 4-week single-blind placebo run-in period, patients were randomized to placebo or barnidipine (10 mg, 20 mg, or 30 mg modified release capsules) once daily for 6 weeks. Nonresponders (sitting DBP > or =90 mmHg and a decrease of < 10 mmHg) were treated for an additional 6 weeks with a dose increase of 10 mg. At each clinic visit, sitting and standing blood pressure and heart rate were measured approximately 24 hours after the last dose of study drug was taken. Compared with placebo, barnidipine lowered blood pressure, with a trend toward a dose-response relationship over the dose range 10-30 mg. A dose increment of 10 mg in nonresponders resulted in additional reductions in blood pressure. At the end of the active treatment period, the responder rates were 41% and 57% for 10 mg and 20 mg barnidipine, respectively. Heart rate in both sitting and standing positions was not affected by barnidipine. Treatment with barnidipine was well tolerated, and the incidence of adverse events was dose related and consistent with vasodilatation. In conclusion, barnidipine (10-30 mg) administered once daily is well tolerated and reduces blood pressure in patients with mild to moderate hypertension.
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