The importance of coating standardization in gastro-resistant capsules produced in magistral pharmacy/Importancia da padronizacao dos revestimentos utilizados em capsulas gastrorresistentes produzidas em farmacia magistral

Gastro-resistant capsules are often used for several purposes, such as protection of unstable drugs in acid medium to the action of gastric fluids or protection of the gastric mucosa to irritants drugs. The aim of this study was to verify the variation of preparations of capsules coating with cellul...

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Veröffentlicht in:Acta scientiarum. Health sciences 2013-07, Vol.35 (2), p.211
Hauptverfasser: Franco, Suelen Cristina, da Silva, Flavia Cristina, Baracat, Marcela Maria, Casagrande, Rubia, Rafael, Janice Aparecida, de Medeiros, Daniela Cristina
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Sprache:spa
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Zusammenfassung:Gastro-resistant capsules are often used for several purposes, such as protection of unstable drugs in acid medium to the action of gastric fluids or protection of the gastric mucosa to irritants drugs. The aim of this study was to verify the variation of preparations of capsules coating with cellulose acetate phthalate and methacrylic acid copolymer, without drug addition, in 7-10% coating concentrations, prepared manually with four or five immersions in tested coating solution. Results were analyzed considering the formulation's disintegration test. Within the context of formulations under analysis, it was observed that the capsules coated with cellulose acetate phthalate 10% complied with the pharmacopeia's disintegration specifications. However, capsules coated with methacrylic acid copolymer did not show accordance with the pharmacopeia's specifications. The results emphasize the need for the standardization of coating methodology. Keywords: methacrylic acid copolymer, cellulose acetate phthalate, enteric coating, capsules. Capsulas gastrorresistentes sao frequentemente utilizadas com diversos propositos, como a protecao de farmacos instaveis em meio acido a acao dos fluidos gastricos ou protecao da mucosa gastrica a farmacos irritantes. O objetivo deste trabalho foi verificar a variacao da preparacao de revestimento de capsulas com acetoftalato de celulose e copolimero do acido metacrilico, sem adicao de farmaco, em concentracoes que variam de 7 a 10% de revestimento, preparadas manualmente com quatro a cinco camadas da solucao dos revestimentos testados. Os resultados foram analisados considerando o teste de desintegracao das formulacoes. Das formulacoes testadas, foi observado que as capsulas revestidas com acetoftalato de celulose a 10% cumpriram com as especificacoes farmacopeicas quanto a desintegracao. No entanto, capsulas revestidas com copolimero de acido metacrilico nao mostraram conformidade com as especificacoes farmacopeicas. Os resultados obtidos enfatizam a necessidade de padronizacao da metodologia de revestimento. Palavras-chave: copolimero do acido metacrilico, acetofatalato de celulose, revestimento enterico, capsulas.
ISSN:1679-9291
DOI:10.4025/actascihealthsci.v35i2.14581