Comparative Pharmacology
Head-to-head clinical analysis: LEXXEL versus ZESTORETIC.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LEXXEL versus ZESTORETIC.
LEXXEL vs ZESTORETIC
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
LEXXEL is a combination of felodipine, a dihydropyridine calcium channel blocker that inhibits calcium influx into vascular smooth muscle and cardiac muscle, causing vasodilation and reduced myocardial contractility, and enalapril, an angiotensin-converting enzyme (ACE) inhibitor that prevents conversion of angiotensin I to angiotensin II, reducing vasoconstriction, aldosterone secretion, and sodium reabsorption.
Combination of lisinopril (ACE inhibitor) and hydrochlorothiazide (thiazide diuretic). Lisinopril inhibits angiotensin-converting enzyme, reducing angiotensin II formation, decreasing vasoconstriction and aldosterone secretion. Hydrochlorothiazide inhibits sodium reabsorption in distal convoluted tubule, increasing diuresis and reducing plasma volume.
1 tablet (felodipine 5 mg / enalapril 5 mg) orally once daily, may increase to 2 tablets once daily after 2-4 weeks if needed.
Zestoretic (lisinopril/hydrochlorothiazide) is available in fixed-dose combinations. Typical adult dose: 10 mg/12.5 mg, 20 mg/12.5 mg, or 20 mg/25 mg orally once daily. Maximum dose: lisinopril 80 mg/day, hydrochlorothiazide 50 mg/day.
None Documented
None Documented
Enalapril: ~1.3 hours; Enalaprilat: terminal half-life ~35-38 hours, with multiple-dose accumulation half-life ~11 hours; effective half-life for ACE inhibition ~24 hours.
Lisinopril: terminal half-life approximately 12 hours (accumulation half-life 13.8 hours in patients with normal renal function). Hydrochlorothiazide: terminal half-life 5.6–14.8 hours (mean 9.6 hours).
Renal: ~35-50% as unchanged drug (enalaprilat), biliary/fecal: ~15-30% as metabolites and unchanged drug; total renal elimination of enalaprilat accounts for ~60-80% of dose.
Lisinopril is excreted unchanged in urine; 100% renal elimination. Hydrochlorothiazide is excreted primarily by the kidney (≥95% as unchanged drug) via tubular secretion.
Category C
Category C
ACE Inhibitor + Calcium Channel Blocker
ACE Inhibitor + Diuretic