alexa In vivo evaluation of guar gum-based colon-targeted drug delivery systems of ornidazole in healthy human volunteers.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Bioequivalence & Bioavailability

Author(s): Krishnaiah YS, Indira Muzib Y, Bhaskar P

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Abstract The aim of the present study was to find the in vivo performance of guar gum-based colon-targeted tablets of ornidazole (dose 250 mg) in comparison with an immediate release tablet of ornidazole (250 mg) in human volunteers. Six healthy volunteers participated in the study, and a cross over design was followed. The plasma concentration of ornidazole was estimated by HPLC. The immediate release tablets of ornidazole produced peak plasma concentration (Cmax of 2171.33+/-278.15 ng/ml) at 2.91+/-0.14 h (Tmax) whereas colon-targeted tablets produced peak plasma concentration (Cmax of 1716.66+/-125.83 ng/ml) at 11.91+/-0.14 h. The delayed Tmax, decreased Cmax, and decreased ka of ornidazole from guar gum-based colon-targeted ornidazole tablets, in comparison with the immediate tablets, indicated that the drug was not released in stomach and small intestine, but targeted to colon. Slow absorption of ornidazole from the less absorptive colon might result in the availability of drug for local action in the colon. This article was published in J Drug Target and referenced in Journal of Bioequivalence & Bioavailability

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