Comparative Pharmacology
Head-to-head clinical analysis: CAPOZIDE 25 15 versus RAMIPRIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CAPOZIDE 25 15 versus RAMIPRIL.
CAPOZIDE 25/15 vs RAMIPRIL
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.
Ramipril is a prodrug that is hydrolyzed in the liver to its active metabolite ramiprilat, which inhibits angiotensin-converting enzyme (ACE), thereby decreasing angiotensin II production, reducing vasoconstriction, aldosterone secretion, and sodium 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.
Initial: 2.5 mg orally once daily; Maintenance: 2.5-20 mg/day in 1-2 divided doses; Maximum: 20 mg/day.
None Documented
None Documented
Clinical Note
moderateRamipril + Torasemide
"The risk or severity of adverse effects can be increased when Ramipril is combined with Torasemide."
Clinical Note
moderateRamipril + Etacrynic acid
"The risk or severity of adverse effects can be increased when Ramipril is combined with Etacrynic acid."
Clinical Note
moderateRamipril + Furosemide
"The risk or severity of adverse effects can be increased when Ramipril is combined with Furosemide."
Clinical Note
moderateRamipril + Bumetanide
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 half-life of ramiprilat is 13–17 hours (prolonged to 50 hours in renal impairment). Accumulation half-life is 110 hours after multiple doses.
Captopril: 95% renally excreted, primarily as unchanged drug and metabolites (disulfide dimers). Hydrochlorothiazide: at least 95% renally excreted as unchanged drug.
Primarily renal (60% as unchanged drug and metabolites) and fecal (40% via biliary elimination).
Category C
Category D/X
ACE Inhibitor and Diuretic Combination
ACE Inhibitor
"The risk or severity of adverse effects can be increased when Ramipril is combined with Bumetanide."