Comparison of in vitro dissolution profiles by ANOVA-based, model-dependent and -independent methods

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery and Formulation

Background:

• Dissolution testing is critical for evaluating drug product performance.
• Comparing dissolution profiles helps assess formulation equivalence and guide development.
• Naproxen sodium film-coated tablets are a common immediate-release dosage form.

Purpose of the Study:

• To compare various methods for analyzing in vitro dissolution profiles of naproxen sodium tablets.
• To evaluate the ease of application, usefulness, advantages, and disadvantages of each comparison method.
• To identify the most discriminative and informative methods for dissolution profile analysis.

Main Methods:

• Dissolution testing performed according to the USP monograph for naproxen sodium.
• Application of model-independent methods: difference factor (f1) and similarity factor (f2).
• Application of model-dependent methods and ANOVA-based methods for dissolution profile comparison.

Main Results:

• All tested methods (ANOVA-based, model-dependent, f-factors) are applicable and useful for comparing dissolution profiles.
• ANOVA-based and model-dependent methods demonstrated higher discrimination compared to f-factors.
• f-Factors are simpler to apply and interpret but depend on the selection of the last dissolution time point.

Conclusions:

• ANOVA-based methods provide detailed information on both the level and shape of dissolution profiles, aiding formulation development.
• Model-dependent methods offer a statistically sound approach to modeling dissolution data.
• The choice of method depends on the desired level of detail and ease of application in evaluating naproxen sodium dissolution profiles.