Development of effervescent tablets containing benznidazole complexed with cyclodextrin.

dc.contributor.authorMaximiano, Flávia Pires
dc.contributor.authorCosta, Guilherme Hideki Yoshizane
dc.contributor.authorBarreto, Lívia Cristina Lira de Sá
dc.contributor.authorBahia, Maria Terezinha
dc.contributor.authorCunha Filho, Marcílio Sérgio Soares da
dc.date.accessioned2017-06-21T17:22:22Z
dc.date.available2017-06-21T17:22:22Z
dc.date.issued2011
dc.description.abstractObjectives: Benznidazole (BNZ), the primary chemotherapy agent used to treat Chagas disease, has poor aqueous solubility, which results in low bioavailability. The purpose of this work was to develop stable effervescent tablets using an inclusion complex of BNZ with cyclodextrin (CD). Method: In the first phase, different CDs were evaluated according to their ability to improve the aqueous solubility of BNZ. Then, inclusion complexes of BNZ in the solid state were produced by the kneading method and the complexes were evaluated using several physical–chemical assays. Finally, effervescent tablets were prepared according to a complete 32 factorial design. The effects of the concentration of CD and effervescent mixture on the dissolution rate and physical stability of tablets were evaluated. Key findings: Hydroxypropyl-b-cyclodextrin produced the greatest improvement in the aqueous solubility of BNZ, almost 20-times greater than the water system. Solid systems produced with BNZ and CD showed physical–chemical interactions and increased the drug dissolution rate, suggesting the formation of a true solid inclusion complex. Moreover, the effervescent matrix of the tablets was effective in improving the dissolution behaviour of BNZ complexed with CD. Conclusions: Effervescent tablets produced using an inclusion complex of BNZ with CD suggest a possible improvement in the bioavailability of BNZ, and this could represent a relevant advance in Chagas therapy.pt_BR
dc.identifier.citationMAXIMIANO, F. P. et al. Development of effervescent tablets containing benznidazole complexed with cyclodextrin. Journal of Pharmacy and Pharmacology, v. 63, p. 786-793, 2011. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1111/j.2042-7158.2011.01284.x/abstract>. Acesso em: 23 fev. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1111/j.2042-7158.2011.01284.x
dc.identifier.issn1365-2125
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/8027
dc.identifier.uri2http://onlinelibrary.wiley.com/doi/10.1111/j.2042-7158.2011.01284.x/abstractpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectBioavailabilitypt_BR
dc.subjectDissolution ratept_BR
dc.subjectFactorial designpt_BR
dc.titleDevelopment of effervescent tablets containing benznidazole complexed with cyclodextrin.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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