The aim of this study was to investigate the influence of pH, buffer species and ionic strength on the release mechanism of chlorpheniramine maleate (CPM) from matrix tablets containing chitosan and xanthan gum prepared by a hot-melt extrusion process. Drug release from hot-melt extruded (HME) tablets containing either chitosan or xanthan gum was pH and buffer species dependent and the release ...

The aim of the study was to develop and physicochemicaly characterize single unit controlled delivery system of Theophylline and was formulated as floating matrix tablet by direct compression method using gas generating agent (sodium bicarbonate) and various viscosity grades of hydrophilic polymers (HPMC K15M, K4M; HPC and Carbapol 934P). Formulation was optimized on the basis of buoyancy and i...

As the brand Epilim, there is a sugar free liquid and oral syrup both containing sodium valproate 200mg in 5ml. It is also available as sodium valproate 100mg crushable tablets, 200mg and 500mg enteric coated tablets and 200mg, 300mg and 500mg modified release tablets. There are also a number of these preparations available as generic formulations both of sodium valproate and valproic acid. It ...

The aim of this study was to develop new multi-layer matrix tablets to achieve bimodal drug release profiles (fast release/slow release/fast release). Hydroxypropyl methylcellulose acetate succinate (HPMCAS, type MF) was chosen as a matrix former, because it is water-insoluble at low, and water-soluble at high pH values. Studies focused on the elucidation of the drug release mechanisms from HPM...

The aim of the investigation was to assess the effect of oral 5-flourouracil pre-treatment on the in vitro drug release from a model colon-targeted guar gum matrix tablet formulation of mebendazole. Guar gum matrix tablets of mebendazole were subjected to in vitro drug release studies in simulated colonic fluids (4%w/v of rat caecal contents) obtained after oral treatment of rats either with va...

the objective of research was to explore the suitability of lipids like compritol 888 ato and stearic acid as release retardant to develop sustained release (sr) tablets. the sr micromatrices of lipid (s) and glipizide were prepared (lm1- lm6) as intermediate product by fusion method and assessed for various pharmacotechnical properties. micromatrices were formulated as sr tablets (f1-f6) by di...

Investigation on natural sources from plants, animals, and microorganisms that produce gums mucilages goes increasing day by to check their pharmaceutical applications. Different have been studied for effects but the use of date palm (Phoenix dactylifera L.) mucilage as a excipient is still under cover. The aim this study was therefore evaluate compare flow property binding ability crude, purif...