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Porous carriers for controlled/modulated drug delivery
Indian Journal of Pharmaceutical Sciences
|April 9, 2010
Summary
Porous carriers enhance drug delivery with their unique structures, improving bioavailability and dissolution for poorly soluble drugs. These materials offer predictable adsorption and release, advancing pharmaceutical applications.
Area of Science:
- Materials Science
- Pharmaceutical Sciences
- Drug Delivery
Background:
- Porous carriers are increasingly developed as controlled drug delivery matrices.
- They offer advantages like uniform structure, high surface area, and tunable pore size.
- These properties enable reproducible drug adsorption and release.
Purpose of the Study:
- To review the development and applications of porous carriers in drug delivery.
- To highlight the role of pore structure in drug release kinetics.
- To discuss the use of porous carriers for improving oral bioavailability and dissolution of poorly soluble drugs.
Main Methods:
- Literature review of porous carrier development and applications.
- Analysis of pore types (open, closed, transport, blind) and their impact on drug release.
- Examination of various porous materials used in pharmaceuticals (silica, ethylene vinyl acetate, polypropylene foam, titanium dioxide).
Main Results:
- Porous carriers facilitate controlled release through dissolution and diffusion within pores.
- Different pore sizes (mesoporous, macroporous, microporous, nanoporous) are utilized for specific applications.
- These carriers improve oral bioavailability and dissolution rates of poorly water-soluble drugs.
Conclusions:
- Porous carriers are versatile matrices for advanced drug delivery systems.
- Their structural characteristics are key to predictable drug release and enhanced therapeutic efficacy.
- Applications include sustained release, floating systems, and improving solubility of challenging compounds.
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