Shoaib, M Harris, Tazeen, Jaweria, Merchant, Hamid A. and Yousuf, Rabia Ismail (2006) Evaluation of drug release kinetics from ibuprofen matrix tablets using HPMC. Pakistan Journal of Pharmaceutical Sciences, 19 (2). pp. 119-124. ISSN 1011-601X

The aim of this study is to develop a once-daily sustained release matrix tablet of ibuprofen using hydroxypropyl methylcellulose (HPMC) as release controlling factor and to evaluate drug release parameters as per various release kinetic models. In order to achieve required sustained release profile tablets were directly compressed using Avicel pH 101 and Magnesium stearate. The formulated tablets were also characterized by physical and chemical parameters and results were found in acceptable limits. Different dissolution models were applied to drug release data in order to evaluate release mechanisms and kinetics. Criteria for selecting the most appropriate model was based on linearity (coefficient of correlation). The drug release data fit well to the Higuchi expression. Drug release mechanism was found as a complex mixture of diffusion, swelling and erosion.

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