Comparative Pharmacology
Head-to-head clinical analysis: BETIMOL versus NADOLOL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BETIMOL versus NADOLOL.
BETIMOL vs NADOLOL
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.
Non-selective beta-adrenergic receptor antagonist (beta-blocker) that competitively blocks beta1 and beta2 receptors, 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.
40 to 80 mg orally once daily, may be increased at 3-7 day intervals up to 240 mg once 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).
Clinical Note
moderateNadolol + Digitoxin
"Nadolol may increase the bradycardic activities of Digitoxin."
Clinical Note
moderateNadolol + Deslanoside
"Nadolol may increase the bradycardic activities of Deslanoside."
Clinical Note
moderateNadolol + Acetyldigitoxin
"Nadolol may increase the bradycardic activities of Acetyldigitoxin."
Clinical Note
moderateNadolol + Ouabain
"Nadolol may increase the bradycardic activities of Ouabain."
Terminal elimination half-life: 14–24 hours (average 20 hours); prolonged in renal impairment (up to 45 hours) allowing once-daily dosing
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%.
Renal (unchanged drug) 75-85%; fecal/biliary <5%
Category C
Category C
Beta-Blocker
Beta-Blocker