2 research outputs found

    An Improved Fuzzy Minā€“Max Neural Network for Data Classification

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    Formulation and evaluation of bi-layer floating tablets of ziprasidone HCl and trihexyphenidyl HCl

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    The purpose of this research study was to establish ziprasidone HCl NR 40 mg and trihexyphenidyl HCl SR 4mg in the form of bi-layer sustained release floating tablets. The tablets were prepared using sodium HPMC K4M / HPMC K15M as bio-adhesive polymers and sodium bicarbonate acting as a floating layer. Tablets were evaluated based on different parameters such as thickness, hardness, friability, weight variation, in vitro dissolution studies, content of active ingredient and IR studies. The physico-chemical properties of the finished product complied with the specifications. In vitro release from the formulation was studied as per the USP XXIII dissolution procedure. The formulations gave a normal release effect followed by sustained release for 12 h which indicates bimodal release of ziprasidone HCl from the matrix tablets. The data obtained was fitted to Peppas models. Analysis of n values of the Korsmeyer equation indicated that the drug release involved non-diffusional mechanisms. By the present study, it can be concluded that bi-layer tablets of ziprasidone HCl and trihexyphenidyl HCl will be a useful strategy for extending the metabolism and improving the bioavailability of Ziprasidone HCl and Trihexyphenidyl HCl.<br>O propĆ³sito deste trabalho foi preparar ziprasidona. HCl NR 40 mg e triexifenidila.HCl SR 4 mg na forma de comprimidos efervescentes bicamada de liberaĆ§Ć£o controlada. Os comprimidos foram preparados utilizando HPMC K4M / HPMC K15M sĆ³dico como polĆ­mero bioadesivo e bicarbonato como camada efervescente. Os comprimidos foram avaliados quanto a diferentes parĆ¢metros, como espessura, dureza, friabilidade, variaĆ§Ć£o de peso, dissoluĆ§Ć£o in vitro, conteĆŗdo do ingrediente ativo e estudos de IV. As propriedades fĆ­sico-quĆ­micas dos produtos finais cumprem as especificaƧƵes. A liberaĆ§Ć£o in vitro da formulaĆ§Ć£o foi estudada de acordo com o procedimento de dissoluĆ§Ć£o da USP XXIII. As formulaƧƵes resultaram em liberaĆ§Ć£o normal, seguida por liberaĆ§Ć£o controlada por 12 h, o que indica a liberaĆ§Ć£o bimodal de cloridrato de ziprasidona dos comprimidos matriz. Os dados obtidos se adequaram aos modelos de Peppas. A anĆ”lise de valores de n da equaĆ§Ć£o de Korsmeyer indicou que a liberaĆ§Ć£o do fĆ”rmaco envolveu mecanismos nĆ£o difusionais. Por este estudo, pode-se concluir que os comprimidos bicamada de ziprasidona.HCl e de triexifenidila.HCl serĆ£o um bom caminho para estender o metabolismo e para melhorar a biodisponibilidade de ziprasidona.HCl e de triexifenidila.HCl
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