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Analytical methods for the quality control of Prozac capsules
M A Raggi1, F Bugamelli, G Casamenti
1Department of Pharmaceutical Sciences, University of Bologna, Italy. raggima@kaiser.alma.unibo.it
Journal of Pharmaceutical and Biomedical Analysis
|January 27, 1999
Summary
This study evaluates analytical methods for determining fluoxetine in Prozac capsules. Spectrophotometric and High-Performance Liquid Chromatography (HPLC) methods were compared for accuracy and sensitivity.
Area of Science:
- Analytical Chemistry
- Pharmaceutical Analysis
Background:
- Accurate quantification of fluoxetine is crucial for pharmaceutical quality control.
- Existing analytical methods require evaluation for efficiency and reliability.
Purpose of the Study:
- To describe and compare spectrophotometric and chromatographic methods for fluoxetine determination.
- To assess the performance of these analytical techniques in Prozac capsules.
Main Methods:
- Two spectrophotometric methods (direct and derivative) and two High-Performance Liquid Chromatography (HPLC) methods (UV and spectrofluorimetric detection) were employed.
- Sample preparation involved drug extraction using a methanol-water mixture.
- HPLC utilized a C8 reversed-phase column with a tetramethylammonium perchlorate buffer-acetonitrile mobile phase.
Main Results:
- Derivative spectrophotometry offered better recovery and reduced interference compared to direct spectrophotometry.
- Both spectrophotometric methods demonstrated linearity within the 5-30 µg/mL concentration range.
- HPLC with UV detection was more precise, while HPLC with spectrofluorimetric detection was more sensitive.
Conclusions:
- Both spectrophotometric and HPLC methods provide reliable determination of fluoxetine in Prozac capsules.
- The choice between methods depends on whether precision (HPLC-UV) or sensitivity (HPLC-fluorescence) is prioritized.