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Improved drug delivery using microemulsions: rationale, recent progress, and new horizons.
R P Bagwe1, J R Kanicky, B J Palla
1Center for Surface Science and Engineering, Dept. of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA.
Summary
Microemulsions offer enhanced drug delivery due to improved solubility and stability. Different microemulsion types (oil-external, water-external, middle-phase) provide versatile pharmaceutical applications.
Area of Science:
- Pharmaceutical Sciences
- Colloid and Surface Chemistry
Background:
- Microemulsions are thermodynamically stable, isotropic liquid mixtures of oil, water, and a surfactant.
- Their unique properties, including high surface area and solubilization capacity, make them attractive for drug delivery.
Purpose of the Study:
- To review the fundamental properties, preparation, and applications of microemulsions in drug delivery.
- To discuss the different types of microemulsions and their suitability for various pharmaceutical formulations.
- To highlight the potential of microemulsion-based gels as advanced drug carriers.
Main Methods:
- Literature review of microemulsion properties and applications in drug delivery.
- Analysis of different microemulsion phases (oil-external, water-external, middle-phase).
- Examination of microemulsion-based gels for pharmaceutical use.
Main Results:
- Microemulsions demonstrate superior drug solubilization, extended shelf-life, and ease of administration.
- The choice of microemulsion type depends on drug characteristics and administration site.
- Microemulsion-based gels offer promising characteristics for controlled drug release.
Conclusions:
- Microemulsions are highly effective and versatile drug delivery systems.
- Understanding microemulsion properties is crucial for successful pharmaceutical formulation.
- Microemulsion-based gels represent a significant advancement in drug carrier technology.