26. March 2017
Abstract The aim of this study was to prepare controlled-release (CR) granules with suitable particle strength, flowability, particle size distribution (PSD) and density characteristics for blending with other excipients. We also wanted these CR granules to contain large quantities of active pharmaceutical ingredient (API). A high shear mixer was used to mix an API with various polymers at various feed ratios, and the resulting granulated materials were sprayed with solvent. The wet granules...
08. March 2017
Abstract Moisture activated dry granulation (MADG) method was used to develop IR tablets with cohesive, fluffy and high dose drugs. To evaluate this approach, three drugs: metformin hydrochloride, acetaminophen and ferrous ascorbate were selected as model compound along with three binders: maltodextrin DE16, PVP K 12 and HPC. The granules were generated using MADG method and tablets were prepared using rotary tablet press. The granules and tablets were characterized for particle size analysis,...
05. March 2016
Almost all drugs are rapidly and completely absorbed form gastrointestinal tract. But some drug having problems like first pass metabolism, low bioavailability, chances of dose dumping, unstability at colonic pH, produced gastric irritation when administered in single unit dosage form or disturbed normal colonic bacterial flora. It creates the need to design safer and effective drug delivery systems. The floating microspheres are one of the most promising multiparticulates drug delivery system...
08. August 2015
The aim of this study was to design a local, floating, mucoadhesive drug delivery system containing metronidazole for Helicobacter pylori eradication. Face-centered central composite design (with three factors, in three levels) was used for evaluation and optimization of in vitro floating and dissolution studies. Sodium alginate (X1), low substituted hydroxypropyl cellulose (L-HPC B1, X2) and sodium bicarbonate (X3) concentrations were the independent variables in the development of...
24. June 2015
Formulating drugs in the amorphous form is an attractive and promising strategy to overcome the poorly water soluble challenge commonly encountered in the newly discovered drug. The active research in the investigation of the properties and performance of drugs in the amorphous form has revealed the major challenges in developing amorphous formulations into marketable products. The three main challenges are development of analytical techniques to characterise the amorphous formulations,...
06. April 2015
The objective of the present research work was to prepare and evaluate sustained release subcutaneous (s.c.) nanoparticles of low molecular weight heparin (LMWH). The nanoparticles were prepared by water-in-oil in-water (w/o/w) emulsion and evaporation method using different grades of polylactide co-glycolide (50:50, 85:15), and different concentrations of polyvinyl alcohol (0.1%, 0.5%, 1%) aqueous solution as surfactant. The fabricated nanoparticles were evaluated for size, shape, zeta...