Comparative Pharmacology
Head-to-head clinical analysis: BENTYL PRESERVATIVE FREE versus LUSEDRA.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BENTYL PRESERVATIVE FREE versus LUSEDRA.
BENTYL PRESERVATIVE FREE vs LUSEDRA
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.
LUSEDRA (valbenazine) is a selective vesicular monoamine transporter 2 (VMAT2) inhibitor. It reduces presynaptic dopamine release by inhibiting VMAT2, thereby reducing dopamine neurotransmission in the striatum.
20 mg orally three times daily; may increase to 40 mg three times daily if tolerated.
5 mg orally once daily.
None Documented
None Documented
Terminal elimination half-life: 1.9–3.3 hours (in healthy adults). Clinically, short half-life necessitates frequent dosing for sustained effect.
8-12 hours (terminal, prolonged in renal impairment; dose adjustment needed if CrCl <30 mL/min).
Renal: ~50% (mostly as metabolites), Biliary/Fecal: ~40% (as unchanged drug and metabolites), minor via enterohepatic circulation.
Primarily renal (70-80% as unchanged drug); 20-30% via biliary/fecal.
Category C
Category C
Anticholinergic
Anticholinergic