30. August 2018
This study aimed to improve dissolution rate of valsartan in an acidic environment and consequently its oral bioavailability by solid dispersion formulation. Valsartan was selected as a model drug due to its low oral bioavailability (~23%) caused by poor solubility of this drug in the low pH region of gastrointestinal tract (GIT) and presence of absorption window in the upper part of GIT. Solid dispersions were prepared by solvent evaporation method with Eudragit® E100, Soluplus® or...
17. August 2018
In current study a holistic material characterization approach was proposed and an extensive raw material property database was developed including a wide variety of APIs and excipients with different functionalities. In total 55 different materials were characterized and described by over 100 raw material descriptors related to particle size and shape distribution, specific surface area, bulk, tapped and true density, compressibility, electrostatic charge, moisture content, hygroscopicity,...
25. July 2018
Dry Powder Inhaler (DPI) could offer a propellant-free, easy-to-use powder form ensuring better stability than liquid dosae forms. Therefore the development of traditional carrier-based and carrier-free new generation systems is a determinative factor in the field of DPI formulation. The purpose of our research work was to combine these two systems, utilizing their beneficial properties to produce a novel pulmonary drug delivery system containing ciprofloxacin hydrochloride (CIP). Co-spray...
20. March 2017
Abstract In recent years, the demand and interest for functionalized polymers have increased for drug delivery purposes. Because of the increased interest, methods that can be used to predict physical and chemical properties of polymers prior to synthesis would be of high value for the design and development of novel polymer structures. Through use of molecular descriptors and Principal Component Analysis, this study explores the possibilities of using in silico methods for polymer design and...
01. February 2016
Poor water solubility of many drugs has emerged as one of the major challenges in the pharmaceutical world. Polymer-based amorphous solid dispersions have been considered as the major advancement in overcoming limited aqueous solubility and oral absorption issues. The principle drawback of this approach is that they can lack necessary stability and revert to the crystalline form on storage. Significant upfront development is, therefore, required to generate stable amorphous formulations. A...