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Development of Nanosuspension Formulation for Oral Delivery of Quercetin

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With the aim to enhance dissolution rate and oral bioavailability of quercetin, a poorly water-soluble drug, quercetin loaded nanosuspension (QT-NS) was fabricated by a tandem of nano-precipitation (NP) and high pressure homogenization (HPH) method. The formulation of nanosuspension was optimized by screening different stabilizers. Characterization of the original QT powder and QTNS was carried out by transmission electron microscopy and scanning electron microscopy, X-ray diffraction (XRD) and dissolution tests. QT-NS presented a sphere-like shape under transmission electron microscopy with an average diameter of 393.5 nm and the zeta potential of –35.75 mV. XRD study suggested that QT was maintained in the state of crystalline during the fabrication process. The solubility of QT in nanosuspension was about 70-fold that of crude QT, and the dissolution of QT from QT-NS was increased as compared to that of the original QT powder. In plasma, QT-NS exhibited a significant reduction of clearance rate (2±0.1 mL/min vs. 15±4 mL/min) and increase of AUC0–∞ (53995±4126 g/mL·min versus 3470±110.1 g/mL·min) compared with the control suspension. Our results showed that the developed nanosuspension formulation had a great potential as a possible formulation of the poorly water-soluble QT to enhance the bioavailability.
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Document Type: Research Article

Publication date: August 1, 2010

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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