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RISS 인기검색어
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- 저자 : Heba A. Hazzah (검색결과 1 건)
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Hamdy Abdelkader,Heba A. Hazzah,Magda A. EL-Massik,Ossama Y. Abdallah 한국약제학회 2013 Journal of Pharmaceutical Investigation Vol.43 No.4
Pellets are one of multiparticulate pharmaceutical forms and can offer numerous technical and biopharmaceutical advantages compared with single dose unit formulations, e.g. tablets and capsules. This study aimed at formulation of controlled-release pellets of doxazosin mesylate (DM), a widely used treatment for antihypertensive and benign prostatic hyperplasia. DM was loaded onto microcrystalline cellulose CELLETS pellets using hydroalcoholic solution and alcoholic suspension layering techniques to achieve a minimum drug load of 4 mg DM/g pellets. DM-layered CELLETS were coated by Aquacoat dispersion (ready-made ethylcellulose dispersion) using a coating pan technique as a simple and widely utilized technique in pharmaceutical industry. Controlled-release DM-layered pellets showed a release profile comparable to the controlled-release commercial product Cardura XL Tablet. Also, the mechanism of DM release from Aquacoat CELLETS was mathematically modeled and imaged by scanning electron microscopy to elucidate drug release mechanisms from the prepared pellet formulations. Accelerated stability studies of the prepared pellets were performed under stress conditions of 40 C, and 75 % RH for 3 months. In conclusion, preparation of controlledrelease DM-layered CELLETS is feasible using a simple and conventional coating pan technology.
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