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J Clin Hypertens (Greenwich). 2012; 14:821–827. ©2012 Wiley Periodicals, Inc.

Combination antihypertensive therapies are recommended to attain blood pressure (BP) targets especially in high-risk patients in whom rapid and pronounced BP control is essential. This 28- to 54-week, open-label, multicenter study evaluated the safety and efficacy of a triple combination, aliskiren with amlodipine and hydrochlorothiazide (HCTZ), in patients with moderate to severe hypertension. Following a washout period of up to 4 weeks, patients received aliskiren/HCTZ 300/12.5 mg for 1 week, followed by add-on amlodipine 5 mg for 1 week. Thereafter, the doses of amlodipine and HCTZ were doubled. The first 206 of 564 patients who completed 28 weeks of study continued for an additional 26 weeks. Safety was assessed by recording all adverse events. Efficacy variables included changes in BP from baseline to endpoint and BP control rate. Of 564 patients, 493 completed the study. Peripheral edema (9.4%), headache (5.7%), nasopharyngitis (4.1%), and bronchitis (3.7%) were reported frequently. Clinically significant reductions in mean sitting systolic BP/mean sitting diastolic BP from baseline (−34.2/−20.3 mm Hg and −37.3/−21.8 mm Hg at weeks 28 and 54, respectively) were observed. Corresponding BP control rates were 69.1% and 77.1%. The aliskiren/amlodipine/HCTZ combination in patients with moderate to severe hypertension was well tolerated and provided clinically significant BP reductions and effective BP control.