IMPROVEMENT OF SOLUBILITY AND DISSOLUTION RATE OF INDOMETHACIN BY SOLID DISPERSIONS IN GELUCIRE 50/13 AND PEG 4000

El-Badry, Mahmoud and Fetih, Gihan and Fathy, Mohamed (2009) IMPROVEMENT OF SOLUBILITY AND DISSOLUTION RATE OF INDOMETHACIN BY SOLID DISPERSIONS IN GELUCIRE 50/13 AND PEG 4000. Saudi Pharmaceutical Journal, 17 (3). pp. 219-230.

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Abstract

The aim of this study was to prepare and characterize solid dispersions of water insoluble non steroidal anti-inflammatory drug, indomethacin (IND), with polyethylene glycol 4000 (PEG4000) and Gelucire 50/13 (Gelu.) for enhancing the dissolution rate of the drug. The solid dispersions (SDs) were prepared by hot melting method at 1:1, 1:2 and 1:4 drug to polymer ratios. Scanning electron microscopy (SEM), X-ray powder diffractometry (XRD) and differential scanning calorimetry (DSC) were used to examine the physical state of the drug. Furthermore, the solubility and the dissolution rate of the drug in its different systems were explored. The data from the XRD showed that the drug was still detectable in its solid state in all SDs of IND-Gelu. and disappeared in case of higher ratio of IND-PEG4000. DSC thermograms showed the significant change in melting peak of the IND when prepared as SDs suggesting the change in crystallinity of IND. The highest ratio of the polymer (1:4) enhanced the drug solubility about 4 folds or 3.5 folds in case of SDs of IND-PEG or IND-Gelu., respectively. An increased dissolution rate of IND at pH 1.2 and 7.4 was observed when the drug was dispersed in these carriers in form of physical mixtures (PMs) or SDs. IND released faster from the SDs than from the pure crystalline drug or the PMs. The dissolution rate of IND from its PMs or SDs increased with an increasing amount of polymer.

Item Type: Article
Subjects: Pharmaceutical Sciences
Pharmacy
Divisions: College of Pharmacy > Pharmacy
Depositing User: MOHAMED IBRAHIM
Date Deposited: 13 Apr 2017 11:17
Last Modified: 13 Apr 2017 11:17
URI: http://eprints.kku.edu.sa/id/eprint/547

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