Journal of Pharmaceutical Investigation

The Korean Society of Pharmaceutical Sciences and Technology (한국약제학회)
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Molecular Effect of PVP on The Release Property of Carvedilol Solid Dispersion

  • Oh, Myeong-Jun (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Shim, Jung-Bo (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Lee, Eun-Yong (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Yoo, Han-Na (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Cho, Won-Hyung (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Lim, Dong-Kyun (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Lee, Dong-Won (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.) ;
  • Khang, Gil-Son (Department of BIN Fusion Technology & Department of Polymer Nano Science Technology, World Class Univ., Chonbuk Nat'l Univ.)
  • Received : 2011.03.25
  • Accepted : 2011.06.09
  • Published : 2011.06.20
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Abstract

This study aimed to confirm the effect of molecular weight (MW) in solid dispersion of carvedilol with poly-vinylpyrrolidone (PVP) of various MW. Solid dispersion of carvedilol with PVP was prepared by spray-drying method. Scanning electron microscopy (SEM) was used to analyze the surface of solid dispersion samples. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) were used to analyze the crystalline of solid dispersion. Fourier transform infrared spectroscopy (FT-IR) was used to analyze the change of chemical structure characteristic of solid dispersion. DSC and XRD show that drug crystalline was changed. FT-IR revealed that chemical structure of solid dispersion comparing the chemical structure of drug was changed. The dissolution studies of solid dispersion presented at simulated gastric juice (pH 1.2). The dissolution rate of solid dispersion was dramatically enhanced than pure drug and the MW of PVP has an effect on the release property of carvedilol in solid dispersion. In conclusion, the present study has confirmed the effect of MW of PVP on release property of solid dispersion formulation of carvedilol with PVP.

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References

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