Setting up multivariate specifications on critical raw material attributes to ensure consistent drug dissolution from...

Area of Science:

• Pharmaceutical Sciences
• Materials Science

Background:

• High drug-load sustained-release matrix tablets require consistent quality.
• Variability in raw materials, such as Panax notoginseng saponins (PNS), can affect drug product performance.

Purpose of the Study:

• To characterize raw material variability influencing in-vitro dissolution of sustained-release tablets.
• To establish quality control measures for consistent final product quality.

Main Methods:

• Utilized a model formulation of Panax notoginseng saponins (PNS), hydroxypropyl methylcellulose, anhydrous lactose, and magnesium stearate.
• Characterized PNS extract powders from different lots and sources using chromatographic fingerprints and the SeDeM expert system.
• Employed latent variable modeling to correlate raw material properties with drug release.

Main Results:

• Significant variations in the in-vitro release behavior of active pharmaceutical ingredients (APIs) from different PNS batches were observed.
• Physical properties of raw materials, including specific surface area, particle size distribution width, and hygroscopicity, were identified as major predictors of drug dissolution.
• Higher specific surface area, wider particle size distribution, and increased hygroscopicity (or low moisture content) correlated with increased drug release.

Conclusions:

• Multivariate specifications for critical material attributes (CMAs) were established for efficient incoming material assessment.
• A multivariate design space aligned with Quality by Design (QbD) principles was explored to ensure predictable drug release.
• Controlling raw material attributes is crucial for ensuring the consistent quality and performance of sustained-release tablets.