COMPRESSION OF INDOMETHACIN COPRECIPITATES WITH POLYMER MIXTURES - EFFECT OF PREPARATION METHODOLOGY

被引:14
作者
KARNACHI, AA
DEHON, RA
KHAN, MA
机构
[1] NE LOUISIANA UNIV,SCH PHARM,DEPT PHARMACEUT & MED CHEM,MONROE,LA 71209
[2] NE LOUISIANA UNIV,DEPT GEOSCI,MONROE,LA 71209
关键词
D O I
10.3109/03639049509063034
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
The objective of this study was to prepare, characterize, formulate and compare coprecipitates, solid dispersions and physical mixtures of indomethacin with Eudragit polymer mixtures, RS100 and L100. Coprecipitates, solid dispersions (melting-solvent method) and physical mixtures were prepared with a drug : polymer ratio of 12.6 : 1.0 respectively. Biconvex tablets of 7 mm diameter were compressed; Response variables studied were cumulative percent released and T-50. Dissolution was performed by exposing the tablets to SGF (pH 1.2) for 1 hour followed by pH 7.2 phosphate buffer for 24 hours. T-50 values obtained were 7.5 hours for coprecipitates, 4.5 hours for solid dispersions and 17 hours for physical mixtures. The drug loading for all the three formulations did not show significant difference. The formulations were characterized by X-ray diffraction (qualitative and quantitative) and IR. IR data did not indicate any significant difference between the pure drug and the formulations.
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页码:1473 / 1483
页数:11
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