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. 2008 Nov;25(11):2593-600.
doi: 10.1007/s11095-008-9677-1. Epub 2008 Jul 16.

The impact of aqueous solubility and dose on the pharmacokinetic profiles of resveratrol

Surajit Das  1 , Hai-Shu Lin, Paul C Ho, Ka-Yun Ng
Affiliations

The impact of aqueous solubility and dose on the pharmacokinetic profiles of resveratrol

Surajit Das et al. Pharm Res. 2008 Nov.

Erratum in

  • Pharm Res. 2008 Dec;25(12):2983

Abstract

Purpose: This study aimed at the investigation of the impact of aqueous solubility and dose manipulation on the pharmacokinetics of resveratrol.

Methods: Water soluble intravenous and oral formulations of resveratrol were prepared with hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and randomly methylated-beta-cyclodextrin (RM-beta-CD), respectively. Sodium salt and suspension of resveratrol in carboxymethyl cellulose (CMC) were used as the reference intravenous and oral formulations, respectively. The pharmacokinetics of resveratrol was assessed in Sprague-Dawley rats. Plasma resveratrol concentrations were measured by high performance liquid chromatography (HPLC).

Results: Both HP-beta-CD and RM-beta-CD enhanced the aqueous solubility of resveratrol. After intravenous administration, rapid elimination of resveratrol was observed at all tested doses (5, 10, and 25 mg kg(-1)) regardless of formulation types; with non-linear elimination occurring at the dose of 25 mg kg(-1). RM-beta-CD significantly increased the maximal plasma concentration of orally administered resveratrol, but, it did not increase the oral bioavailability in comparison with the CMC suspension. Furthermore, the oral bioavailability remained unchanged among all tested doses (15, 25, and 50 mg kg(-1)).

Conclusions: Aqueous solubility barrier might affect the speed but not the extent of resveratrol absorption. Further, dose manipulation (up to 50 mg kg(-1)) did not have a significant impact on the oral bioavailability of resveratrol.

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