Please use this identifier to cite or link to this item: http://ir.library.ui.edu.ng:8080/jspui/handle/123456789/1246
Title: RELEASE AND MUCOADHESION PROPERTIES OF DICLOFENAC MATRIX TABLETS FROM NATURAL AND SYNTHETIC POLYMER BLENDS
Authors: Odeniyi, Michael
Khan, Nasir
Peh, Kok
Keywords: Cedrela gum
release mechanism
delayed release
polymer blend,
mucoadhesion matrix
Issue Date: 1-May-2015
Publisher: Polish Pharmaceutical Society
Series/Report no.: Acta Poloniae Pharmaceutica - Drug Research;Vol. 72 No. 3 pp. 559-567, 2015
Abstract: The delayed release and mucoadhesive properties of Cedrela gum and hydroxypropylmethylcellulose blend in diclofenac sodium tablet formulations were evaluated. Tablets were prepared by direct compression and the crushing strength and detachment force were found to increase from 74.49 ± 1.22 to 147.25 ± 2.57 N and 0.302 ± 0.36 to 1.141 ± 0.05 N from low to high level of polymers, respectively. The release kinetics followed Korsmeyer-Peppas release and the n varied between 0.834 and 1.273, indicating that the release mechanism shifts from Fickian to super case I (anomalous release). The drug release profile fits a pulsatile-release pattern characterized by a lag time followed by a more or less rapid and complete drug release. The Cedrela gum-hydroxypropylmethylcelluse blend tablets delayed diclofenac release for 2 h and sustained the release for 12 h. The polymer blend delayed drug release in the 0.1 M HCl simulating gastric environment and subsequent release pH 6.8 phosphate buffer.
URI: http://ir.library.ui.edu.ng:8080/jspui/handle/123456789/1246
Appears in Collections:Academic Publications in Pharmaceutical & Industrial Pharmacy

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