Amlodipine/benazepril: fixed dose combination therapy for hypertension

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Abstract
Myocardial infarction, stroke, heart failure and end-stage renal disease have all been linked to inadequate control of blood pressure. Despite overwhelming evidence that uncontrolled hypertension is responsible for a sizeable number of adverse health-related outcomes, control of the disease remains considerably suboptimal. Available data demonstrate that in order to achieve adequate blood pressure control, a large number of patients require therapy with more than one medication. Fixed dose combination antihypertensive therapy has many advantages over other treatment options. Positive effects on blood pressure control, rates of adherence, adverse effects and cost have been identified. Amlodipine/benazepril (Lotrel), Novartis) is a fixed dose combination product indicated for the treatment of hypertension. Although not currently recommended as first-line therapy, studies confirm that this combination of a long-acting calcium antagonist and an angiotensin-converting enzyme (ACE) inhibitor possesses substantial blood pressure lowering capabilities. Whereas adverse events tend to become more frequent with increasing doses of antihypertensive monotherapy, the rate of adverse events attributed to amlodipine/benazepril in clinical trials often correlates with rates ascribed to placebo. Amlodipine/benazepril is capable of sustaining blood pressure control over a 24 h period and appears to be minimally affected by an occasional dose omission. Unlike the older calcium antagonists, amlodipine is unlikely to cause alterations in myocardial contractility. Additionally, the amlodipine/benazepril combination product costs less than the same therapy administered as the individual components. It is, therefore, reasonable to consider therapy with amlodipine/benazepril in appropriate patients after an adequate trial of antihypertensive monotherapy.

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