Influence of Food on Acute and Chronic Effects of Captopril in Essential Hypertensive Patients

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Abstract
To determine if food reduces the hemodynamic and humoral effects of captopril in patients with essential hypertension, we performed two studies. In the acute study, 15 inpatients with uncomplicated essential hypertension randomly received a single oral dose of placebo or captopril (25 mg) while fasting or after eating, or captopril (50 mg) after eating. Blood pressure and heart rate were measured every 30 min up to 4 h (and up to 10 h in six out of the 15 patients), while plasma renin activity, plasma aldosterone, and serum angiotensin-converting enzyme were measured 2 h after dosing. Compared with placebo, captopril significantly reduced mean blood pressure (p

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