Revealing facts behind spray dried solid dispersion technology used for solubility enhancement

Area of Science:

• Pharmaceutical Science
• Drug Delivery Systems

Background:

• Poor drug solubility and bioavailability present significant challenges in pharmaceutical formulation.
• Amorphous solid dispersions (ASDs) offer a promising strategy to overcome these limitations.

Purpose of the Study:

• To review the importance and application of spray drying technology for enhancing drug solubility and bioavailability.
• To discuss key factors influencing spray drying, including additives, polymers, process parameters, and scale-up.

Main Methods:

• Literature review focusing on spray drying technology for amorphous solid dispersions.
• Discussion of critical aspects such as polymer selection, excipient roles, and process optimization using Design of Experiments (DoE).

Main Results:

• Spray drying is a scalable technology for producing amorphous solid dispersions with diverse powder characteristics.
• Optimization of process and formulation parameters is essential for successful drug product development.

Conclusions:

• Spray drying is a valuable technology for improving drug solubility and bioavailability, applicable from lab to commercial scale.
• Further research is required for polymer screening, preventing drug re-crystallization, and ensuring product stability.
• Adopting a Quality by Design (QbD) approach is recommended for seamless scale-up and manufacturing.