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KMID : 0043319850080010007
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Archives of Pharmacal Research
1985 Volume.8 No. 1 p.7 ~ p.14
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Controlled Release of Isonicontinic Acid Hydrazide from the Membrane-Coated Tablet
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Kim KM
Kim SK
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Abstract
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Membrane-coated tablet of isonicotinic acid hydrazide (INAH) which releases INAH at the zero-order kinetics was developed. It consisted of a soluble tablet core surrounded by aporous membrane which controls the diffusion rate. Tablet cores were prepared. by compressing granules of INAH and polyvinyl pyrrolidone (PVP). The cores were coated by polyvinyl chloride (PVC) dissolved in methyl ethyl ketone in which micronized sucrose were suspended. Diffusion rate of INAH from the tablet through the membrane was constant until the loaded INAH in the core was almost released. The rate was independent of pH of the dissolution medium. Water-soluble sucrose particles behaved as a poreproducing material in the water-insoluble PVC film coat. The pH independency of the rate was probably due to the high solubility of INAH in the water of wide pH range. The diffusion rate of INAH could be controlled by changing the composition of the membrane or the coat weight. This membrane-coated INAH tablet seemed to be a powerful candidate for the controlled release drug delivery system (DDS) of INAH or other highly watersoluble drugs.
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