Comparative Pharmacology
Head-to-head clinical analysis: BENTYL PRESERVATIVE FREE versus TOLTERODINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BENTYL PRESERVATIVE FREE versus TOLTERODINE.
BENTYL PRESERVATIVE FREE vs TOLTERODINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Dicyclomine is a muscarinic acetylcholine receptor antagonist (anticholinergic) that inhibits the action of acetylcholine on structures innervated by postganglionic parasympathetic nerves. It reduces smooth muscle spasm in the gastrointestinal tract by blocking M1, M2, and M3 receptors, with a predominant effect on M3 receptors in the gut.
Competitive antagonist of muscarinic acetylcholine receptors (M1, M2, M3, M4, M5), with selectivity for the M3 receptor subtype involved in detrusor muscle contraction, reducing bladder smooth muscle contractility and increasing bladder capacity.
20 mg orally three times daily; may increase to 40 mg three times daily if tolerated.
2 mg PO twice daily; may reduce to 1 mg twice daily if tolerated.
None Documented
None Documented
Clinical Note
moderateTolterodine + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Tolterodine."
Clinical Note
moderateTolterodine + Cyclosporine
"The metabolism of Cyclosporine can be decreased when combined with Tolterodine."
Clinical Note
moderateTolterodine + Fluconazole
"The metabolism of Fluconazole can be decreased when combined with Tolterodine."
Clinical Note
moderateTolterodine + Clotrimazole
Terminal elimination half-life: 1.9–3.3 hours (in healthy adults). Clinically, short half-life necessitates frequent dosing for sustained effect.
Terminal elimination half-life is 2-4 hours in extensive CYP2D6 metabolizers; increased to 4-10 hours in poor metabolizers or with CYP3A4 inhibitors.
Renal: ~50% (mostly as metabolites), Biliary/Fecal: ~40% (as unchanged drug and metabolites), minor via enterohepatic circulation.
Primarily hepatic metabolism via CYP2D6 and CYP3A4; renal excretion accounts for <5% of unchanged drug; ~80% excreted in urine as metabolites, ~20% in feces.
Category C
Category A/B
Anticholinergic
Anticholinergic
"The metabolism of Clotrimazole can be decreased when combined with Tolterodine."