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Formulation of gastroretentive floating drug delivery system using hydrophilic polymers and its in vitro characterization
Meka, Venkata Srikanth; Dharmanlingam, Senthil Rajan; Kolapalli, Venkata Ramana Murthy.
  • Meka, Venkata Srikanth; International Medical University. School of Pharmacy. Kuala Lumpur. MY
  • Dharmanlingam, Senthil Rajan; International Medical University. School of Pharmacy. Kuala Lumpur. MY
  • Kolapalli, Venkata Ramana Murthy; International Medical University. School of Pharmacy. Kuala Lumpur. MY
Braz. j. pharm. sci ; 50(2): 431-439, Apr-Jun/2014. tab, graf
Article in English | LILACS | ID: lil-722176
ABSTRACT
The aim of the present research is to formulate and evaluate the gastroretentive floating drug delivery system of antihypertensive drug, propranolol HCl. Gastroretentive floating tablets (GRFT) were prepared by using a synthetic hydrophilic polymer polyethylene oxide of different grades such as PEO WSR N-12 K and PEO 18 NF as release retarding polymers and calcium carbonate as gas generating agent. The GRFT were compressed by direct compression strategy and the tablets were evaluated for physico-chemical properties, in vitro buoyancy, swelling studies, in vitro dissolution studies and release mechanism studies. From the dissolution and buoyancy studies, F 9 was selected as an optimized formulation. The optimized formulation followed zero order rate kinetics with non-Fickian diffusion mechanism. The optimized formulation was characterised with FTIR studies and observed no interaction between the drug and the polymers.
RESUMO
O objetivo da presente pesquisa é o de formular e avaliar o sistema de liberação de fármaco gastrorretentivo flutuante, contendo o anti-hipertensivo, cloridrato de propranolol. Comprimidos gastrorretentivo flutuantes (GRFT) foram preparados utilizando um polímero hidrofílico sintético, o óxido de polietileno, de diferentes graus, tais como GE WSR N-12 K e GE 18 NF, como polímeros de retardamento de liberação, e carbonato de cálcio, como agente gerador de gases. Os GRFT foram comprimidos por compressão direta e avaliados para determinação das propriedades físico-químicas, flutuabilidade in vitro, estudos de inchamento, de dissolução in vitro e de mecanismo de liberação. Dos testes de dissolução e de flutuabilidade, selecionou-se F 9 como formulação otimizada. A formulação otimizada seguiu cinética de ordem zero, com mecanismo de difusão não-Fickiano. Essa formulação foi caracterizada por estudos de FTIR, não se observando interação entre o fármaco e os polímeros.
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Full text: Available Index: LILACS (Americas) Main subject: Hydrophobic and Hydrophilic Interactions / Drug Liberation Language: English Journal: Braz. j. pharm. sci Year: 2014 Type: Article Affiliation country: Malaysia Institution/Affiliation country: International Medical University/MY

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Full text: Available Index: LILACS (Americas) Main subject: Hydrophobic and Hydrophilic Interactions / Drug Liberation Language: English Journal: Braz. j. pharm. sci Year: 2014 Type: Article Affiliation country: Malaysia Institution/Affiliation country: International Medical University/MY