the aim of the present study was to prepare and evaluate an osmotically controlled mucoadhesive cup-core (ocmc) containing aceclofenac. a special technique was used while preparing an ocmc. stability of ocmc was determined in natural human saliva, and it was found that both ph and device are stable in human saliva. ocmc was evaluated by weight uniformity, thickness, hardness, friability, swelli...

the present study concerned with the development and characterization of metronidazole microcapsules prepared by thermal change method using different ratios (1:1, 1:2 and 1:4) of ethyl cellulose in order to select the best microcapsule formulation with a good encapsulation efficiency and drug release profile. the obtained microcapsules were discrete, spherical with free flowing properties and ...

today hydrogels are considered as the materials that are able to play important role in drug delivery systems. to design an effective hydrogel applicable network, mathematical modeling has a critical role. a successful drug delivery device relies not only on intelligent network design but also on accurate prior mathematical modeling of drug release profiles. in this study, the modeling of the i...

triptoreline is a potent agonist of luteinizing hormone-releasing hormone, currently used in the treatment of prostatic cancer where therapy may be required over months or years. frequent injection of drug decreases patients’ compliance. the present study describes the formulation of a sustained release microparticulate drug delivery system containing triptoreline acetate, using poly (d,l lacti...

pegylated polypropyleneimine (ppi) dendritic scaffold was used for the delivery of an anti-leukemic drug, imatinib. the current study evolves and emerges the use pegylated ppi dendritic scaffold for the delivery of this drug. in this imatinib was synthesized and loaded with pegylated ppi dendritic scaffold. parameters such as ft-ir, nmr, sem, drug release, dsc and hemolytictoxicity are required...

        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...

in this paper, carbon nanotubes (cnts) were added into chitosan (cs) hydrogels in the form of chitosan modified cnts (cs-cnts) composites to prepare carbon nanotubes hydrogels (cnts-gel). the products, named cs-mwcnts, were characterized by scanning electron microscope (sem) and fourier transform infrared (ftir) spectroscopy. swelling properties and effect of ph on controlled release performanc...

Novel drug delivery systems for controlled-release of opioid agonists as a long time painkillers or opioid antagonists for opium, heroin, and alcohol addiction are under development or in clinical use today. In this article, the field of “new drug delivery systems” is momentarily reviewed from the viewpoint of the marketed opioid agonists/antagonists dosage forms today.

Chitosan with excellent biodegradable and biocompatible characteristics has received attention as an oral drug delivery vehicle for controlled-release formulations. In this study an enteric-coated capsule containing theophylline-chitosan beads based on 23 factorial designs was prepared as a colon drug delivery system. The theophylline-chitosan gel beads were formulated by adding the drug-contai...