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Development of a multiparticulate system containing enteric-release mini-tablets of omeprazole
Tondo Filho, Volnei Jose; Andreazza, Itamar Francisco; Sato, Mayumi Elisa Otsuka; Murakami, Fábio Seigi.
Affiliation
  • Tondo Filho, Volnei Jose; Federal University of Paraná. Department of Pharmacy. Curitiba. BR
  • Andreazza, Itamar Francisco; Federal University of Paraná. Department of Pharmacy. Curitiba. BR
  • Sato, Mayumi Elisa Otsuka; Federal University of Paraná. Department of Pharmacy. Curitiba. BR
  • Murakami, Fábio Seigi; Federal University of Paraná. Department of Pharmacy. Curitiba. BR
Braz. j. pharm. sci ; 50(3): 505-511, Jul-Sep/2014. tab, graf
Article in English | LILACS | ID: lil-728698
Responsible library: BR1.1
ABSTRACT
The main aim of this study was to develop a multiparticulate system containing mini-tablets of omeprazole formulated with an enteric polymer with pH-dependent solubility. Pre-formulation studies showed good flow and compaction capacity, leading to the production ofhigh quality mini-tablets. The mini-tablets were coated in a fluidized bed with hydroxypropylmethylcellulose /Eudragit(r) L30D55 and packed into hard gelatin capsules. The dissolution profile showed gastro-resistance and zero-order kinetics. The dissolution profile for the formulation containing lactose as the diluent and coated with 12% (tablet weight gain) of polymer was similar to that ofthe reference drug.
RESUMO
O presente trabalho teve como objetivo desenvolver e avaliar um sistema multiparticulado de liberação modificada, composto por mini-comprimidos revestidos com polímero de liberação pH-dependente, utilizando como fármaco modelo o omeprazol. Os mini-comprimidos (diâmetro de 2,5 mm) foram obtidos em máquina de compresssão excêntrica, revestidos em leito fluidizado com hidroxipropilmetilcelulose/Eudragit(r)L30D55 e, em seguida, acondicionados em cápsulas gelatinosas duras. A partir dos resultados obtidos no perfil de dissolução foi possível demonstrar a liberação gastro-resistente e comportamento cinético de ordem zero. A formulação contendo lactose como diluente, com revestimento de 12% de polímero, demonstrou semelhança com o medicamento referência.
Subject(s)


Full text: Available Collection: International databases Database: LILACS Main subject: Tablets, Enteric-Coated / Omeprazole Language: English Journal: Braz. j. pharm. sci Year: 2014 Document type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Paraná/BR

Full text: Available Collection: International databases Database: LILACS Main subject: Tablets, Enteric-Coated / Omeprazole Language: English Journal: Braz. j. pharm. sci Year: 2014 Document type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Paraná/BR
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