Antihypertensive efficacy of the angiotensin II AT1-receptor antagonist losartan: results of a randomized, double-blind, placebo-controlled, parallel-group trial using 24-hour blood pressure monitoring. Ambulatory Blood Pressure Monitoring Study Group.
The antihypertensive efficacy of once- and twice-daily losartan was evaluated in a randomized, double-blind, placebo-controlled, parallel-group trial using ambulatory 24-h blood pressure monitoring in 122 patients with mild to moderate essential hypertension. Data are reported for 112 patients who completed the active treatment phase. Losartan exerted a sustained 24-h antihypertensive effect at all doses studied (50 or 100 mg once daily, or 50 mg twice daily). Losartan demonstrated a smooth, gradual onset of action, did not affect normal circadian variations on blood pressure, and had no significant effect on heart rate. An additive antihypertensive effect was obtained by adding low-dose hydrochlorothiazide to losartan monotherapy at all doses of losartan studied. Losartan was well tolerated during the study with a frequency of adverse events comparable with placebo. No major adverse events were recorded. The results of this study indicate that losartan is an effective and well-tolerated antihypertensive agent that provides 24-h blood pressure-lowering efficacy from a single daily dose of 50 mg.
University of Colorado, Boulder 80309-0051, USA.
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D000284:Administration, Oral; D000328:Adult; D057911:Angiotensin Receptor Antagonists; D001713:Biphenyl Compounds / Q000008:administration & dosage*; D001794:Blood Pressure / Q000187:drug effects*; D018660:Blood Pressure Monitoring, Ambulatory; D004311:Double-Blind Method; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D007093:Imidazoles / Q000008:administration & dosage*; D019808:Losartan; D013777:Tetrazoles / Q000008:administration & dosage*; D016896:Treatment Outcome
D057911:Angiotensin Receptor Antagonists; D001713:Biphenyl Compounds; D007093:Imidazoles; D013777:Tetrazoles; D019808:Losartan