Controlled release swellable tablets of phenobarbital were prepared by a simple direct compression process using hydroxypropyl methylcellulose (HPMC) as the matrix former. The effects of the viscosity grades of HPMC and HPMC/lactose ratio and ethylcellulose (EC)/sodium carboxymethylcellulose (NaCMC) and their concentrations on the release behavior of phenobarbital from HPMC matrices wer...

Objective: The purpose of this work was design and performance investigation of a nanocarrier based on magnetic nanofibers containing core-shell nanostructuresfor anticancerdrug delivery of daunorubicin (DAN) by measuring their drug release at different pH values. Methods: Fe3O4 nanoparticles and Fe3O4@SiO2core-shell nanostructures were synthesized through coprecipitation and Stöber methodresp...

objective(s): in this study, drug loaded electrospun nanofibrous mats were prepared and drug release and mechanism from prepared nanofibers were investigated.  materials and methods: paclitaxel (ptx) loaded polylactic acid (pla) nanofibers were prepared by electrospinning. the effects of process parameters, such as ptx concentration, tip to collector distance, voltage, temperature and flow rate...

abstract: background: a new type of drug delivery system known as mucoadhesive film has been developed for oral thrush treatment. due to comfortable use of this drug delivery system, this would be encouragingly utilized, especially in babies and patient under chemotherapy. nystatin mucoadhesive film (nmf) is a polymeric film which is adhered to front upper gum and back to the upper lip and rele...

thymol, an important and advantageous component of many essential oils, has been applied as an antimicrobial agent in animals. to increase the duration of action of this compound in ruminants, it was decided here to prepare a controlled release carrier for thymol. hydroxy propyl methyl cellulose (hpmc) and ethyl cellulose (ec) were used as the matrix polymer here. mixtures of thymol with eight ...

the present study deals with development of a floating in-situ gel of the narrow absorption window drug baclofen. sodium alginate-based in-situ gelling systems were prepared by dissolving various concentrations of sodium alginate in deionized water, to which varying concentrations of drug and calcium bicarbonate were added. fourier transform infrared spectroscopy (ftir) and differential scannin...

Introduction: Anal fissures are small tears in the lining skin of the anus presenting with typical symptoms of pain and bleeding during defecation. Several new forms of medicines such as glyceryle trinitrate (GTN) ointments and diltiazem, a calcium channel-blocking agent, have been recently used for the treatment of these fissures. Diltiazem relaxes the muscle of anal sphincter and consequently...

the aim of this study was to develop a derivative of chitosan as pharmaceutical excipient used in sustained-release matrix tablets of poorly soluble drugs. a water-soluble quaternary ammonium carboxymethylchitosan was synthesized by a two-step reaction with carboxymethylchitosan (cmcts), decylalkyl dimethyl ammonium and epichlorohydrin. the elemental analysis showed that the target product with...

a controlled release matrix formulation for mesalamine was designed and developed to achieve a 24 h release profile. using compritol 888 ato (glyceryl behenate) as an inert matrix-forming agent to control the release of mesalamine, formulation granules containing the solid dispersions were investigated. pectin, a polysaccharide, was used as bacterial dependent polymer for colon targeting. the m...