Comparative Pharmacology
Head-to-head clinical analysis: BREVIBLOC IN PLASTIC CONTAINER versus COREG CR.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BREVIBLOC IN PLASTIC CONTAINER versus COREG CR.
BREVIBLOC IN PLASTIC CONTAINER vs COREG CR
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Esmolol is a cardioselective beta-1 adrenergic receptor antagonist with minimal intrinsic sympathomimetic activity and membrane-stabilizing properties. At therapeutic doses, it blocks beta-1 receptors in the myocardium, decreasing heart rate, myocardial contractility, and AV conduction velocity, leading to reduced cardiac output and myocardial oxygen demand.
Nonselective beta-1, beta-2, and alpha-1 adrenergic receptor antagonist; no intrinsic sympathomimetic activity; reduces myocardial oxygen demand, decreases peripheral vascular resistance, and suppresses renin-angiotensin-aldosterone system.
Initial loading dose: 500 mcg/kg IV over 1 minute, followed by continuous IV infusion of 50 mcg/kg/min for 4 minutes; if inadequate response, repeat loading dose and increase infusion by 50 mcg/kg/min increments up to 200 mcg/kg/min. Maintenance: 25-200 mcg/kg/min continuous IV infusion.
Initial dose 20 mg orally once daily for patients with heart failure; may increase at 2-week intervals to a target dose of 80 mg once daily.
None Documented
None Documented
Terminal elimination half-life is approximately 9 minutes (range 4–15 minutes) for the parent drug, leading to rapid offset of effect. The half-life of the metabolite ASL-8123 is about 3.7 hours.
Terminal elimination half-life is 7-10 hours; due to controlled-release formulation, effective half-life is prolonged to support once-daily dosing
Elimination primarily via red blood cell esterases; renal excretion of unchanged drug is less than 1% of dose. Metabolite ASL-8123 is inactive and renally excreted.
Renal (16% unchanged, 60% as glucuronide conjugates), biliary/fecal (20%)
Category C
Category C
Beta-Blocker
Beta-Blocker