Batch and continuous processing in the production of pharmaceutical granules.

Area of Science:

• Pharmaceutical Manufacturing
• Chemical Engineering
• Process Analytical Technology

Background:

• Consistent granule quality is crucial for robust pharmaceutical dosage form design.
• The Food and Drug Administration's Process Analytical Technology (PAT) initiative emphasizes reproducible manufacturing processes.
• Traditional granulation and drying methods can present scale-up challenges in pharmaceutical production.

Purpose of the Study:

• To introduce a quasicontinuous granulation and drying process designed to mitigate scale-up issues.
• To provide a method for achieving consistent and reproducible granule quality.
• To offer a simplified and faster validation pathway for pharmaceutical solid manufacturing.

Main Methods:

• A quasicontinuous granulation and drying system utilizing identical equipment for laboratory and production scales.
• Individual control of air volume, temperature, and humidity in drying cells for temperature-sensitive materials.
• Computer-controlled processing variables with data collection for comprehensive documentation.

Main Results:

• The quasicontinuous process ensures consistent and reproducible granule quality, comparable or superior to classical methods.
• Existing pharmaceutical products were successfully transferred to the multicell quasicontinuous process without formulation changes.
• The method simplifies manufacturing procedures and accelerates validation timelines.

Conclusions:

• The quasicontinuous granulation and drying process offers significant advantages over classical methods for pharmaceutical granule production.
• This approach enhances product quality and reproducibility, aligning with modern drug quality system requirements.
• The quasicontinuous concept facilitates industrial manufacturing and galenical development of pharmaceutical solids.