Comparative Pharmacology
Head-to-head clinical analysis: BETOPTIC PILO versus NADOLOL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BETOPTIC PILO versus NADOLOL.
BETOPTIC PILO vs NADOLOL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Betoptic Pilo is a combination of betaxolol (a cardioselective beta-1 adrenergic receptor antagonist) and pilocarpine (a muscarinic cholinergic agonist). Betaxolol reduces aqueous humor production by blocking beta-adrenergic receptors in the ciliary epithelium. Pilocarpine increases aqueous humor outflow by contracting the ciliary muscle and opening the trabecular meshwork.
Non-selective beta-adrenergic receptor antagonist (beta-blocker) that competitively blocks beta1 and beta2 receptors, reducing heart rate, myocardial contractility, and blood pressure.
One drop of 0.5% betaxolol and 4% pilocarpine combination ophthalmic solution instilled into the affected eye(s) 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
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."
Betaxolol: 16–22 hours (clinical context: allows once-daily dosing for glaucoma). Pilocarpine: 0.5–1.5 hours (rapid elimination, requiring multiple daily dosing).
Terminal elimination half-life: 14–24 hours (average 20 hours); prolonged in renal impairment (up to 45 hours) allowing once-daily dosing
Betoptic Pilo (betaxolol and pilocarpine) undergoes both renal and hepatic elimination. Betaxolol is primarily metabolized in the liver (active metabolites) with less than 15% excreted unchanged in urine. Pilocarpine is hydrolyzed in plasma and tissues; its metabolites and a small fraction of unchanged drug are excreted renally. Fecal excretion is negligible.
Renal (unchanged drug) 75-85%; fecal/biliary <5%
Category C
Category C
Beta-Blocker
Beta-Blocker