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Automated analytical systems for drug development studies. 3. Multivessel dissolution testing system based on

K P Shah1, M Chang, C M Riley

  • 1Department of Pharmaceutical Chemistry, Center for BioAnalytical Research, University of Kansas, Lawrence 66045, USA.

Journal of Pharmaceutical and Biomedical Analysis
|September 1, 1995
PubMed
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A new automated system with microdialysis sampling and liquid chromatography accurately measures drug dissolution from tablets. This reproducible system efficiently analyzes both immediate and sustained-release formulations, matching results from traditional methods.

Area of Science:

  • Pharmaceutical Sciences
  • Analytical Chemistry
  • Drug Delivery Systems

Background:

  • Accurate dissolution profiling is crucial for pharmaceutical development and quality control.
  • Traditional methods for dissolution testing can be time-consuming and labor-intensive.
  • Automated systems offer potential for increased efficiency and reproducibility in drug analysis.

Purpose of the Study:

  • To develop and validate an automated system for measuring dissolution profiles of various tablet formulations.
  • To assess the system's reproducibility and compare its performance against established methods.
  • To evaluate the system's capability in analyzing both immediate-release and sustained-release drug products.

Main Methods:

  • Assembly of an automated system integrating a six-vessel dissolution apparatus, microdialysis sampling, a multiposition switching valve, and on-line liquid chromatography.

Related Experiment Videos

  • Utilized DL-5 microdialysis probes for sequential sampling from dissolution vessels.
  • Employed an STT E6 multiposition switching valve for simultaneous sampling from up to six vessels.

    • Main Results:

    • The automated system demonstrated reproducible dissolution profile measurements (RSD < 3%) after addressing sample carry-over and between-probe variability.
    • Successfully measured dissolution for immediate-release acetaminophen and sustained-release Accutrim tablets using optimized sampling intervals.
    • Dissolution profiles obtained from the automated multivessel system showed good agreement with manual and single-vessel automated methods.

    Conclusions:

    • The developed automated multivessel dissolution system provides a reliable and efficient method for characterizing drug release from various tablet types.
    • The system's ability to handle multiple samples simultaneously enhances throughput for dissolution testing.
    • This automated approach offers a viable alternative to conventional dissolution testing, ensuring comparable accuracy and precision.