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- W1966249982 abstract "The objective of this study was to achieve an optimal formulation of spray dried matrix type controlled-release (MTCR) microparticles containing tamsulosin hydrochloride for orally disintegrating tablet. To control the release rate of tamsulosin hydrochloride, Acrylate-methacrylate copolymer (Eudragit(®) L-100 or Eudragit(®) S-100) and ethylcellulose were employed on the composition of MTCR microparticles. Physicochemical properties of MTCR microparticles such as particle size and SEM were characterized. Pharmacokinetic parameters of tamsulosin hydrochloride were evaluated in the rats after oral administration. MTCR microparticles were spherical microparticles of around 10 µm diameter with a corrugated surface. ODTs containing MTCR microparticles were disintegrated within 30 s and MTCR microparticles were able to control the release rate of tamsulosin hydrochloride following Fickian diffusion mechanism. The in vitro release rates of tamsulosin hydrochloride from MTCR microparticles were proportional to the ratio of Acrylate-methacrylate copolymer to ethylcellulose. Moreover, MTCR microparticles retarded the in vivo release rate of tamsulosin hydrochloride without reducing the bioavailability. Our results suggest that MTCR microparticles may be potential oral dosage forms to control the release and to improve the bioavailability of tamsulosin hydrochloride." @default.
- W1966249982 created "2016-06-24" @default.
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- W1966249982 date "2011-12-27" @default.
- W1966249982 modified "2023-09-23" @default.
- W1966249982 title "Preparation andin vivoevaluation of spray dried matrix type controlled-release microparticles of tamsulosin hydrochloride for orally disintegrating tablet" @default.
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- W1966249982 doi "https://doi.org/10.3109/03639045.2011.643894" @default.
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