A comparison of the antihypertensive and metabolic effects of lisinopril 20 mg/hydrochlorothiazide 12.5 mg fixed combination with captopril 50 mg/hydrochlorothiazide 25 mg fixed combination

The antihypertensive and metabolic effects of lisinopril 20 mg/hydrochlorothiazide 12.5 mg in fixed combination were compared with those of captopril 50 mg/hydrochlorothiazide 25 mg in fixed combination in a double-blind clinical trial. After a 3-week placebo run-in period, two parallel groups of hypertensive patients (185 patients in total) each received one treatment once a day for 6 weeks. Blood pressure was measured with a mercury sphygmomanometer and on two occasions by 24 h ambulatory blood pressure monitoring (ABPM). Results indicate that both treatments have similar effects on casual blood pressure measurements, while ABPM recordings show that the lisinopril 20 mg/hydrochlorothiazide 12.5 mg combination is more effective during the last period of the dosing interval. Lisinopril 20 mg/hydrochlorothiazide 12.5 mg as combination antihypertensive treatment does not induce alterations in serum potassium and triglycerides.