Comparative Pharmacology
Head-to-head clinical analysis: CAPOZIDE 25 25 versus UNIVASC.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CAPOZIDE 25 25 versus UNIVASC.
CAPOZIDE 25/25 vs UNIVASC
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Captopril: angiotensin-converting enzyme (ACE) inhibitor that blocks conversion of angiotensin I to angiotensin II, reducing vasoconstriction and aldosterone secretion. Hydrochlorothiazide: thiazide diuretic that inhibits sodium-chloride symporter in distal convoluted tubule, increasing sodium, chloride, and water excretion.
Angiotensin-converting enzyme (ACE) inhibitor; inhibits conversion of angiotensin I to angiotensin II, reducing vasoconstriction and aldosterone secretion, leading to decreased blood pressure.
1 tablet (captopril 25 mg / hydrochlorothiazide 25 mg) orally once daily initially; may titrate up to 2 tablets per day as needed.
Initial: 7.5 mg orally once daily; titrate to 15-30 mg once daily. Maximum: 60 mg/day.
None Documented
None Documented
Captopril: ~2 hours (increased in renal impairment). Hydrochlorothiazide: 6-15 hours (prolonged in renal impairment). Clinical context: trough effect may diminish with once-daily dosing; twice-daily dosing often used.
The terminal elimination half-life of moexiprilat, the active metabolite, is approximately 9.8 hours in patients with normal renal function. This supports once-daily dosing, though the antihypertensive effect may persist beyond 24 hours with continued therapy.
Captopril: renal 95% (40-50% unchanged), biliary/fecal <5%. Hydrochlorothiazide: renal >95% (unchanged), biliary/fecal minimal.
Univasc (moexipril) is primarily eliminated via renal excretion (approximately 50% of absorbed dose as unchanged drug and metabolites) and fecal excretion (about 50%).
Category C
Category C
ACE Inhibitor and Diuretic Combination
ACE Inhibitor