Published in:
Open Access
01-12-2012 | Research article
Pharmacokinetics of high-dose oral thiamine hydrochloride in healthy subjects
Authors:
Howard A Smithline, Michael Donnino, David J Greenblatt
Published in:
BMC Clinical Pharmacology
|
Issue 1/2012
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Abstract
Background
High dose oral thiamine may have a role in treating diabetes, heart failure, and hypermetabolic states. The purpose of this study was to determine the pharmacokinetic profile of oral thiamine hydrochloride at 100 mg, 500 mg and 1500 mg doses in healthy subjects.
Methods
This was a randomized, double-blind, single-dose, 4-way crossover study. Pharmacokinetic measures were calculated.
Results
The AUC0-10 hr and Cmax values increased nonlinearly between100 mg and 1500 mg. The slope of the AUC0-10 hr vs dose, as well as the Cmax vs dose, plots are steepest at the lowest thiamine doses.
Conclusion
Our study demonstrates that high blood levels of thiamine can be achieved rapidly with oral thiamine hydrochloride. Thiamine is absorbed by both an active and nonsaturable passive process.