Pharmacokinetics of lansoprazole in hemodialysis patients
Abstract
The pharmacokinetics of the new benzimidazole proton pump inhibitor lansoprazole and five of its metabolites were assessed after single oral dose administration to five hemodialysis patients. Patients were studied on dialysis and nondialysis days. Multiple blood and dialysate samples were collected after dosing and were assayed for lansoprazole and metabolite content via high-performance liquid chromatography. The degree of lansoprazole plasma protein binding was lower in hemodialysis patients than in subjects with normal renal function or patients with renal impairment not requiring dialytic therapy, although this tended to moderate when assessed immediately after dialysis. Examination of venous plasma concentration, paired arterial-venous concentration, and dialysate data revealed that lansoprazole and its metabolites were poorly dialyzable. No dosage adjustment of lansoprazole is necessary in hemodialysis patients nor is supplementation after hemodialysis sessions necessary.
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