Comparative Pharmacology
Head-to-head clinical analysis: AMLODIPINE MALEATE BENAZEPRIL HYDROCHLORIDE versus VASERETIC.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMLODIPINE MALEATE BENAZEPRIL HYDROCHLORIDE versus VASERETIC.
AMLODIPINE MALEATE; BENAZEPRIL HYDROCHLORIDE vs VASERETIC
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Amlodipine is a dihydropyridine calcium channel blocker that inhibits the influx of calcium ions into vascular smooth muscle and cardiac muscle, leading to vasodilation and reduced peripheral vascular resistance. Benazepril is an angiotensin-converting enzyme (ACE) inhibitor that prevents the conversion of angiotensin I to angiotensin II, resulting in vasodilation and reduced aldosterone secretion.
Vaseretic is a combination of enalapril maleate (an angiotensin-converting enzyme inhibitor) and hydrochlorothiazide (a thiazide diuretic). Enalapril inhibits ACE, reducing angiotensin II formation, decreasing aldosterone secretion, and lowering blood pressure. Hydrochlorothiazide increases sodium and chloride excretion by inhibiting the Na+-Cl- symporter in the distal convoluted tubule, leading to diuresis and vasodilation.
Initial: 2.5-5 mg amlodipine / 10-20 mg benazepril orally once daily, titrated to 10/40 mg once daily based on response.
One tablet (10 mg enalapril maleate/25 mg hydrochlorothiazide) orally once daily; may increase to 2 tablets daily if needed.
None Documented
None Documented
Amlodipine: 30-50 h (terminal), allowing once-daily dosing; benazeprilat: 10-11 h (terminal), effective for 24 h.
Enalaprilat: 35–38 hours (terminal). Clinically, effective half-life ~11 hours. Prolonged in renal impairment (CrCl <30 mL/min: up to 60 hours).
Renal: Amlodipine 10% unchanged, benazeprilat (active metabolite) 50-60% in urine; biliary/fecal: amlodipine 20-25% as metabolites, benazeprilat 10-20% in feces.
Renal: 60% (enalaprilat); biliary/fecal: 33% (enalaprilat). Unchanged enalapril: <5% in urine.
Category D/X
Category C
ACE Inhibitor
ACE Inhibitor/Diuretic Combination