Matrix Tablets
Mostrando 1-12 de 55 artigos, teses e dissertações.
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1. Square-Wave Voltammetry Determination of Ciprofloxacin in Pharmaceutical Formulations and Milk Using a Reduced Graphene Oxide Sensor
In this paper, a simple, sensitive and precise electroanalytical method was developed using a chemically-reduced graphene-oxide (CRGO)-modified glassy carbon electrode and square wave voltammetry (SWV) for determination of ciprofloxacin in pharmaceutical formulations (tablets) and milk samples. Advantages of this sensor include a potential displacement of 10
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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2. Preparation and in vitro & in vivo evaluation of cephalexin matrix tablets
The purpose of the study is to develop cephalexin controlled-release matrix tablets by using lower proportions of release retardant polymer and to establish their in vitro & in vivo correlation. Tablets were compressed by incorporating polymers in a matrix form along with drug which prolong the drug release. Twelve formulations were prepared by mixing ethyl
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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3. Adenanthera pavonina GALACTOMANNAN FOR CONTROLLED DELIVERY OF RUTIN - A PRELIMINARY STUDY
Improving the development of modified release matrix systems strictly depends on selecting an appropriate agent capable of controlling the drug's release. In this study, Adenanthera pavonina galactomannan was investigated as a potential basis for developing a controlled release of rutin. This galactomannan was extracted, purified and characterized by GPC, NM
Quím. Nova. Publicado em: 2018-06
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4. In vitro evaluation of sustained released matrix tablets containing ibuprofen: a model poorly water-soluble drug
ABSTRACT A matrix system was developed that releases ibuprofen (IB) over a 12-hour period and the influence of the polymer type and concentration on the release rate of the drug was evaluated. Tablets containing different concentrations of Carbopol (CP), hydroxypropyl methylcellulose (HPMC), or ethyl cellulose (EC) were prepared using direct compression and
Braz. J. Pharm. Sci.. Publicado em: 2016-12
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5. Use of hydrophilic and hydrophobic polymers for the development of controlled release tizanidine matrix tablets
O objetivo do presente estudo foi desenvolver matriz de de tizanidina de liberação controlada. As formulações foram projetadas usando o método do componente, central com a ajuda de software Design expert(r), versão 7.0. Utilizou-se Avicel pH 101, no intervalo de 14-50%, como material de preenchimento, enquanto HPMC K4M e K100M, no intervalo de 25-55%,
Braz. J. Pharm. Sci.. Publicado em: 2014-12
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6. Formulation and in vitro evaluation of mucoadhesive controlled release matrix tablets of flurbiprofen using response surface methodology
O objetivo do presente estudo foi formular comprimidos mucoadesivos de flurbiprofeno, de liberação controlada, e otimizar o perfil da liberação do fármaco e a bioadesão, utilizando a metodologia de superfície de resposta. Prepararam-se os comprimidos via técnica de compressão direta, que foram avaliados in vitro quanto aos parâmetros de dissoluçã
Braz. J. Pharm. Sci.. Publicado em: 2014-09
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7. Evaluation of sodium diclofenac release using natural rubber latex as carrier
Sodium Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) taken to reduce inflammation and, as an analgesic, reduce pain. Although this drug is widely used in the general population, properties such as the short half-time and some side effects restrict its clinical use. The most common side effects are: gastric irritation, gastritis, peptic ulcer a
Mat. Res.. Publicado em: 18/02/2014
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8. Development and validation of a dissolution test for primaquine/polyethylene oxide matrix tablets
A simple, precise, specific, repeatable and discriminating dissolution test for primaquine (PQ) matrix tablets was developed and validated according to ICH and FDA guidelines. Two UV assaying methods were validated for determination of PQ released in 0.1 M hydrochloric acid and water media. Both methods were linear (R²>0.999), precise (R.S.D.<1.87%) and acc
Quím. Nova. Publicado em: 2013
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9. Cefuroxime axetil loaded gastroretentive floating tabletsbased on hydrophilic polymers: preparation and in vitro evaluation
The aim of this work was to study the formulation and in vitro characterization of hydro dynamically balanced floating matrix tablets using Cefuroxime axetil (CA) as model drug. Different excipients such as hydroxy propyl methyl cellulose (HPMC) K15M, E5LV (gelling agent), sodium bicarbonate (gas generating agent) and sodium lauryl sulfate (SLS) (solubility
Brazilian Archives of Biology and Technology. Publicado em: 2012-04
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10. Compression and evaluation of extended release matrix pellets prepared by the extrusion/spheronization process into disintegrating tablets
Nesse trabalho, estudou-se nova abordagem para a compressão de matrizes de péletes em comprimidos desintegrantes, com o intuito de resolver os problemas relativos à ruptura do polímero de revestimento durante a compressão dos péletes do tipo reservatório. Matrizes de péletes de liberação estendida foram preparadas pela técnica de extrusão/esferon
Brazilian Journal of Pharmaceutical Sciences. Publicado em: 2012-03
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11. Evaluation of the solubility of the HPMC: PVA blends in biological fluids in vitro
Polymers are often used to coat tablets for controlled drug release. The purpose of this study is to evaluate the solubility of the HPMC and PVA blend compared to isolated polymers in solutions with a pH of biological fluids (6 and 1.2) and the dissolution of capsules obtained using theophylline granules produced with the HPMC/PVA 25/75 blend as a matrix and
Materials Research. Publicado em: 27/05/2011
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12. Pharmaceutical use of galactomannans
The pharmaceutical use of galactomannans from different sources, commercial and noncommercial, has been extensively studied over the past decade. Galactomannans show potential in the global trend towards the use of more plant-based products for ecological motives, and their production and application do not cause pollution or disturb the ecosystem. There is
Química Nova. Publicado em: 2011