Journal of Pharmaceutical Investigation
- Volume 19 Issue 2
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- Pages.63-69
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- 1989
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- 2093-5552(pISSN)
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- 2093-6214(eISSN)
Studies on Dissolution Rate of Drugs (XVI)-Sustained Release of Indomethacin from Polymer Solid Dispersions
의약품의 용출에 관한 연구(제 16보)-고분자 고체분산체로부터 인도메타신의 지속 방출-
- Song, Ra-Mi (College of Pharmacy, Kyung Hee University) ;
- Kim, Soo-Uck (College of Pharmacy, Kyung Hee University) ;
- Seo, Seong-Hoon (College of Pharmacy, Kyung Hee University)
- Published : 1989.06.20
Abstract
Dissolution characteristics of indomethacin (IMC) from hydrophobic polymer solid dispersions were investigated. IMC-polyvinyl chloride (PVC) and IMC-ethylcellulose (EC) solid dispersions were prepared. The dissolution patterns of pure IMC, IMC-PVC and IMC-EC solid dispersions prepared at various ratios (1:1, 1:3, 1:5, 1:9 and 1:19 w/w), and those of corresponding physical mixtures were compared. It was found that the dissolution rates of IMC from solid dispersions with PVC or EC decreased in the order of 1:1>1:3>1:5>1:9>1:19 as the drug to polymer ratios decreased. Also the dissolution rates of IMC from EC solid dispersions increased according to flow rate, but PVC solid dispersions were not affected significantly. After all, PVC and EC matrices could be applied in sustained-release preparation of IMC.
Keywords