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Factors influencing hepatic metabolism of antihypertensive drugs: impact on clinical response

ABSTRACT Introduction: Although main antihypertensive drugs are able to efficiently reduce blood pressure, only a third of treated hypertensive patients achieve optimal blood pressure control. Extensive interpatient variability on drug metabolism and oral disposition of blood pressure lowering drugs can contribute to this failure in hypertension management. Areas covered: The aim of the present review is to update the knowledge on the features of hepatic metabolism of the main antihypertensive agents, including β-blockers, calcium channel blockers, angiotensin receptor blockers, and angiotensin converting enzyme inhibitors. The factors that contribute to the large interindividual variability of main antihypertensive drugs are also covered. Expert opinion: The variability of plasma concentration of antihypertensive drugs due to the involvement of hepatic metabolism can contribute to the inadequate control of blood pressure in the daily clinical practice. Genotype screening of specific hepatic drug-metabolizing enzymes may contribute to optimize dose selection and to increase the rate of blood pressure control in patients treated with specific β-blockers, calcium channel blockers, and angiotensin receptor blockers.