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Development and evaluation of accelerated drug release testing methods for a matrix-type intravaginal ring.
Anna Externbrink1, Karin Eggenreich2, Simone Eder2
1Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, University of Greifswald, 17487 Greifswald, Germany.
Summary
Accelerated drug release testing for intravaginal rings can be achieved using temperature and hydro-organic media. These methods accurately predict real-time drug release profiles for quality control.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Quality Control
Background:
- Long-acting non-oral extended release formulations, particularly intravaginal rings, require robust quality control methods.
- Accelerated drug release testing is crucial for developing new steroid and anti-infective intravaginal ring candidates.
Purpose of the Study:
- To develop and evaluate accelerated drug release methods for a steroid-releasing matrix-type intravaginal ring.
- To assess the correlation between accelerated and real-time drug release profiles.
Main Methods:
- Evaluation of drug release under real-time conditions, considering steroid solubility and sink conditions.
- Development and application of accelerated release methods using temperature variations and hydro-organic dissolution media.
- Analysis of drug release kinetics (Fickian diffusion) under both real-time and accelerated conditions.
Main Results:
- Drug release under real-time conditions was influenced by steroid solubility.
- Sufficient sink conditions, achieved with surfactants, resulted in Fickian diffusion-controlled release.
- Both temperature and hydro-organic media effectively accelerated drug release, with combined effects showing further acceleration.
- Accelerated methods successfully differentiated between intravaginal ring prototypes with varying real-time release profiles.
Conclusions:
- Temperature and hydro-organic release media are validated parameters for accelerating drug release from intravaginal rings.
- Variations in these parameters provide release profiles that correlate well with real-time data.
- The developed accelerated methods are suitable for quality control of intravaginal ring formulations.
Keywords:
Accelerated drug release methodsDiffusion controlled drug releaseDrug release kineticsHydro-organic dissolution mediaTemperature-controlled drug releaseVaginal drug deliveryMore Related Videos
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