Comparative Pharmacology
Head-to-head clinical analysis: BETIMOL versus KERLONE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BETIMOL versus KERLONE.
BETIMOL vs KERLONE
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.
Selective beta-1 adrenergic receptor antagonist; reduces 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.
10 mg orally once daily; may increase to 20 mg once daily if needed. Maximum 20 mg/day.
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 8-12 hours in healthy adults; may extend to 15-20 hours in 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 of unchanged drug and metabolites (70-80% unchanged; 20-30% as glucuronide or sulfate conjugates). Biliary/fecal excretion accounts for less than 5%.
Category C
Category C
Beta-Blocker
Beta-Blocker