Absorption: Well absorbed (>90%) following oral administration.
Distribution: Unknown.
Metabolism/Excretion: 80% excreted by kidneys via cationic renal secretion, mostly as unchanged drug; 20% excreted as inactive metabolites; some metabolism in the liver via cytochrome P450 system (CYP3A4 isoenzyme).
Half-life: 10 hr.
Contraindicated in:
Use Cautiously in:
CV: VENTRICULAR ARRHYTHMIAS (INCLUDING TORSADES DE POINTES), chest pain, QT interval prolongation.
Drug-Drug:
Drug-Food:
Renal Impairment
NDC Code*