Ranolazine: A novel metabolic modulator for the treatment of chronic stable angina

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Current medical therapy for chronic stable angina (CSA) is targeted at reducing the frequency of anginal symptoms and improving exercise tolerance by increasing myocardial oxygen supply and/or reducing myocardial oxygen demand. Pharmacological therapy for CSA is limited since traditional agents provide pain relief by reducing the work of the heart or dilating arterioles in an attempt to enhance supply. Combinations of these agents can induce profound reductions in blood pressure that limit the aggressive dosing needed in some patients. Metabolic modulators seek to overcome this issue through a novel mechanism of action. Ranolazine (Renexa, CV Therapeutics) is a partial fatty oxidase (pFOX) inhibitor that increases the amount of ATP produced from glucose and increases the ability of the myocardium to retain functionality despite a reduced oxygen supply. (Formulary 2003;38:461?476)

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