Comparative Pharmacology
Head-to-head clinical analysis: BETIMOL versus CARTROL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BETIMOL versus CARTROL.
BETIMOL vs CARTROL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Nonselective beta-adrenergic receptor antagonist; reduces intraocular pressure by decreasing aqueous humor production.
CARTROL is a beta-1 selective adrenergic receptor antagonist. It inhibits the effects of catecholamines on beta-1 receptors in the heart, reducing heart rate, myocardial contractility, and blood pressure.
1 drop of 0.25% or 0.5% solution in the affected eye(s) twice daily. If inadequate response, increase to 0.5% solution twice daily.
Adults: 2.5 mg orally twice daily, titrated up to maximum 10 mg twice daily.
None Documented
None Documented
2.5 to 5 hours (average 4 hours) in patients with normal renal function; may be prolonged in renal impairment (up to 8-10 hours).
Terminal elimination half-life is 6–8 hours in normal renal function; prolonged to 20–40 hours in severe renal impairment (CrCl <30 mL/min).
Primarily renal (unchanged drug and metabolites). Approximately 60-80% of a dose is excreted renally as unchanged timolol, with the remainder as inactive metabolites. Biliary/fecal excretion accounts for less than 20%.
Primarily renal excretion (approx. 70% unchanged drug), with 20% biliary/fecal, and 10% metabolism to inactive metabolites.
Category C
Category C
Beta-Blocker
Beta-Blocker