ChlorthalidoneAtenololDiureticsDoxazosinHydrochlorothiazideSodium Chloride Symporter InhibitorsAmlodipineLisinoprilAntihypertensive AgentsPropanolaminesHypertensionTetrahydropapaverolineBendroflumethiazideMetoprololDouble-Blind MethodBenzoinAdrenergic beta-AntagonistsBlood PressureDrug Therapy, CombinationClinical Trials as TopicHeart RateSpironolactoneCross-Over Studies