Comparative Pharmacology
Head-to-head clinical analysis: CAPOZIDE 25 15 versus ZESTRIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CAPOZIDE 25 15 versus ZESTRIL.
CAPOZIDE 25/15 vs ZESTRIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Combination of captopril (ACE inhibitor) and hydrochlorothiazide (thiazide diuretic). Captopril inhibits angiotensin-converting enzyme, reducing angiotensin II formation, decreasing vasoconstriction and aldosterone secretion. Hydrochlorothiazide inhibits sodium reabsorption in the distal convoluted tubule, increasing diuresis and reducing plasma volume.
Lisinopril competes with angiotensin I for binding to angiotensin-converting enzyme (ACE), inhibiting its activity, thereby preventing conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This leads to decreased blood pressure, reduced aldosterone secretion, and decreased sodium and water retention.
Oral: 1 tablet (captopril 25 mg / hydrochlorothiazide 15 mg) once daily initially; titrate to a maximum of 2 tablets twice daily based on blood pressure response.
10 mg orally once daily initially; titrate to 20-40 mg orally once daily. Maximum 80 mg/day.
None Documented
None Documented
Captopril: ~2 hours (terminal) in normal renal function; increases to 20-60 hours in severe renal impairment. Hydrochlorothiazide: 6-15 hours (terminal), prolonged in renal impairment.
Terminal elimination half-life is about 12 hours for lisinopril; in heart failure, half-life may be prolonged. Steady-state achieved in 2-3 days.
Captopril: 95% renally excreted, primarily as unchanged drug and metabolites (disulfide dimers). Hydrochlorothiazide: at least 95% renally excreted as unchanged drug.
Primarily renal (approximately 70% unchanged), with the remainder excreted as inactive metabolites via feces and urine.
Category C
Category C
ACE Inhibitor and Diuretic Combination
ACE Inhibitor