dose-response relations with penbutolol -- a beta-adrenergic blocking agent -- were evaluated in a double-blind multiclinic study conducted in 302 outpatients with mild to moderate hypertension ( untreated supine diastolic blood pressure [ bp ] greater than or equal to 95 and less than or equal to 115 mm hg ) .
C0030812
penbutolol
C0020538
hypertension