The most common approach for achieving sustained drug release is by the use of hydrophilic polymeric excipients directly compressed with active ingredients into tablets. Hydrophilic polymers swell in the presence of water to form hydrogel structures from which drugs are released by slow diffusion. The purpose of this study was to prepare a floating drug delivery system of levofloxacin, a fluoro...

Polymeric micelles of single and mixed poloxamines (Tetronic) were evaluated regarding their ability to host the antiglaucoma agent ethoxzolamide (ETOX) for topical ocular application. Three highly hydrophilic varieties of poloxamine (T908, T1107 and T1307) and a medium hydrophilic variety (T904), possessing a similar number of propylene oxide units but different contents in ethylene oxide, wer...

The objectives of this current investigation are (1) to develop a multiple-unit microparticulate dosage form for simvastatin (50, 75 and 100 mg drug loads) from a hydrophilic polymer and a positively-charged polysaccharide moiety using a cold dispersion method, (2) to assess the anti-inflammatory and anti-oxidant properties of the energy drink formulation containing drug-loaded microparticles i...

Transdermal delivery of ondansetron hydrochloride is one of the promising ways to maximize the therapy in contrast to oral delivery. Current investigation efforts are focused in formulating the ondansetron hydrochloride matrix-type transdermal film by incorporating hydrophilic and hydrophobic polymers. In this study, ondansetron hydrochloride transdermal films were prepared using solvent evapor...

Borneol and menthol were two terpenes wildly used as penetrate enhancer in 14 transdermal drug delivery. To explore their penetration enhancement effect towards hydrophilic 15 drug, 5-FU was selected as model drug. A method combined vitro permeation studies and coarse 16 grain molecular dynamics was used to investigate their penetration enhancement effect towards 17 5-FU. As a result, although ...

Zwitterionic polymers have unique features, such as good compatibility, and show promise in the application of drug delivery. In this study, the zwitterionic copolymers, poly(ε-caprolactone)-b-poly(2-methacryloyloxyethyl phosphorylcholine) with disulfide (PCL-ss-PMPC) or poly(ε-caprolactone)-b-poly(2-methacryloyloxyethyl phosphorylcholine) or without disulfide (PCL-PMPC) and with different bloc...

The purpose of this research was to develop a matrix-type transdermal therapeutic system containing drug heparin sodium with different ratios of hydrophilic polymeric systems by the solvent evaporation technique by using 30% (w/w) of PEG 400 LR to the dry polymer weight, incorporated as plasticizer. Different concentrations of oleic acid and isopropyl myristate were used to enhance the transder...

Homogeneous distribution of poorly water-soluble drugs in polyvinylpyrrolidone (PVP), a hydrophilic carrier, is definitely a suitable way to improve the bioavailability of such drugs. However, fundamental knowledge of drug polymer interaction and comprehensive study of the thermal, structural and solubility properties of such binary systems is the prerequisite for the development of useful drug...

Stealth nanoparticles made of polymer micelles are ideal drug carriers for targeted drug delivery, but their stability is critical for intravenous applications. We found that core-surfacecrosslinked nanoparticles (SCNp) made from amphiphilic brush copolymers had greatly enhanced stability. The surface of the SCNps can be easily tailored by using different chains. The amphiphilic brush copolymer...

SLNs are sub-micron colloidal carriers ranging from 50 to 1000 nm, which are composed of physiological lipid, dispersed in water or in aqueous surfactant solution [2,3]. They offer unique properties such as small size, large surface area, high drug loading and are attractive for their potential to improve performance of pharmaceuticals [4-6]. Furthermore, they also have the ability to encapsula...