AI Article Synopsis
- Layered pellets were developed to regulate the release of diclofenac sodium, using an isomalt core for its high water solubility.
- An osmotic mechanism controlled drug release through a swelling polyvinyl acetate coating.
- The study found a linear relationship between the dissolution profiles of the drug and core material, indicating that drug release can be modulated by adjusting the coating properties.
Article Abstract
Layered and coated pellets were formulated to control the release of the diclofenac sodium selected as model drug. A highly water soluble isomalt inert pellet core material was used to osmotically modulate the drug release through the swellable polyvinyl acetate coating layer. Image analysis was applied to determine the shape parameters and the swelling behavior of the pellets. UV-spectroscopy and liquid chromatography with refractive index detection were applied to measure the concentration of the model drug and the core materials. Simultaneous dissolution of both the diclofenac sodium and isomalt was observed. Relationship was found between the dissolution profile of the drug and the core material which linear correlation was independent on the coating level. The latter enables the modulation of drug release beside the permeability control of the swelled coating polymer.
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| http://dx.doi.org/10.1016/j.jpba.2014.06.005 | DOI Listing |
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