CV PC, XN and GT hydrogels with release ratios of 37.15%, 32.79% and 29.39%, respectively, were capable of retarding release with respect to sole WPI hydrogels (p < 0.05).
The lipid carriers effectively retarded release of 5-FU in both media, although it was observed that the release of 5-FU was faster in acidic medium (Figure 2).
This release pattern may be attributed to the modified matrix hydration process of EC (hydrogen bonding induced by the presence of the HEC) and continued retarded release of drug due to the entanglement of saccharide chains which in turn lead to a high BHN of layer 3 as shown in Table 7.
Diclofenac sodium (2-[(2,6-dichlorophenyl)amino]benzeneacetic acid monosodium salt) was investigated as a low-solubility drug and Naklofen® retard prolonged release tablets, containing 100 mg of diclofenac sodium as a prolonged release lipophilic matrix system using factorial design approach.
Diclofenac sodium (2-[(2,6-dichlorophenyl)amino]benzeneacetic acid monosodium salt) was selected as a model drug and Naklofen® retard prolonged release tablets, containing 100 mg of diclofenac sodium, were chosen as a model prolonged release system.
Furthermore, an in vivo study in rats showed that the microspheres neither decrease the bioavailability nor retard the release of famotidine significantly.
A complete replacement of MCC with alginate can promote or retard drug release of spheroids as a function of drug polymer interaction and state of matrix swelling and aggregation.
In an attempt to further retard drug release and to formulate a device for implantation in the frontal lobe of the brain, nanoparticles were dispersed within a multipolymeric matrix.
A solution to the problem was found in the incorporation of 10% v/v water into the ethanolic drug layering solution, resulting in the production of drug-loaded pellets with a smooth morphology which allowed the application of a coherent outer coating able to retard drug release.
Fast stirring rates favored the impregnation process and a slow rate of depressurization was also desirable because promoted the formation of small size pores that retard the release of the indomethacin from the polymeric support and the homogeneous drug distribution into the polymer matrix.
