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Efficacy and tolerability of candesartan cilexetil/hydrochlorothiazide and amlodipine in patients with poorly controlled mild-to-moderate essential hypertension

By R. Fogari, A. Mugellini, for the CANDIA Study Group including G. Derosa and F. Portaluppi

Abstract

The antihypertensive efficacy and tolerability of combination therapy with candesartan cilexetil, 16 mg plus hydrochlorothiazide (CC/HCTZ), 12.5 mg was compared with that of amlodipine, in a multicentre, double-blind, randomised, parallel-group study in patients with mild-to-moderate essential hypertension inadequately controlled by monotherapy. After a two week run-in period on existing therapy, patients with a sitting diastolic blood pressure (DBP) of 90-110 mmHg and a sitting systolic blood pressure (SBP) <or= 180 mmHg were switched to either CC/HCTZ (n=101) or amlodipine (n=102), once-daily by mouth. After eight weeks of treatment, both regimens reduced mean trough blood pressure (BP) by a similar amount: mean sitting SBP/DBP reductions were -15.4/-11.9 mmHg for CC/HCTZ, and -15.7/-12.0 mmHg for amlodipine (group differences, p=0.835/0.963). The BP of 84.2% of patients on CC/HCTZ and 84.5% on amlodipine was controlled (sitting DBP < 90 mmHg and sitting SBP < 140 mmHg) (p=1.00). Six (5.9%) patients on CC/HCTZ and 18 (17.6%) on amlodipine discontinued treatment, including one (1%) and 13 (12.7%) owing to adverse events (p<0.001). The most common adverse event was peripheral oedema, which occurred in two patients on CC/HCTZ and 19 on amlodipine. In conclusion, CC/HCTZ and amlodipine were equally effective in reducing BP in hypertensive patients not controlled by monotherapy, but CC/HCTZ was much better tolerated. Tolerance is an important clinical consideration in the chronic treatment of an asymptomatic disease

Topics: Angiotensin II Type 1 Receptor Blockers, Calcium Channel Blockers, Diuretics, Combination Drug Therapy
Year: 2007
DOI identifier: 10.3317/jraas.2007.023
OAI identifier: oai:iris.unife.it:11392/1673080
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