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Tailoring the release rates of fluconazole using solid dispersions in polymer blends
George Z Papageorgiou1, Dimitrios Bikiaris, Feras I Kanaze
1Laboratory of Organic Chemical Technology, Chemistry Department, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Drug Development and Industrial Pharmacy
|March 26, 2008
Summary
Researchers developed novel Fluconazole formulations using polymer blends for tailored drug release. Polyvinylpyrrolidone (PVP) with Hydroxypropyl methylcellulose (HPMC) or Chitosan enabled adjustable release rates, optimizing delivery for immediate or sustained effects.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
- Drug Delivery Systems
Background:
- Fluconazole is a widely used antifungal agent with low water solubility, posing formulation challenges.
- Developing controlled-release formulations is crucial for improving therapeutic efficacy and patient compliance.
- Polymeric carriers offer versatile platforms for modifying drug release profiles.
Purpose of the Study:
- To investigate the preparation and characterization of Fluconazole solid dispersions using various polymeric carriers and blends.
- To evaluate the influence of different polymers and their ratios on the release kinetics of Fluconazole.
- To determine the suitability of these formulations for immediate and sustained drug delivery.
Main Methods:
- Solid dispersions of Fluconazole were prepared using polyvinylpyrrolidone (PVP), hydroxypropyl methylcellulose (HPMC), and Chitosan as individual carriers.
- Drug release studies were conducted on formulations with varying drug loads and polymer compositions.
- Miscible blends of PVP/HPMC and PVP/Chitosan were utilized to create solid dispersions with adjusted release characteristics.
Main Results:
- Pure PVP and hydroxypropyl methylcellulose (HPMC) carriers resulted in rapid to sustained Fluconazole release, influenced by drug load.
- Chitosan exhibited more controlled release rates, approaching sustained release profiles.
- PVP/HPMC and PVP/Chitosan blends allowed for tunable release rates by adjusting polymer weight ratios.
Conclusions:
- Polymer blends effectively modulate Fluconazole release kinetics, offering a strategy for customized drug delivery.
- PVP/HPMC blends are suitable for immediate-release formulations, while PVP/Chitosan blends are appropriate for controlled-release applications.
- The choice of polymer carrier and blend composition is critical for achieving desired release characteristics.
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