Identifying Critical Binder Attributes to Facilitate Binder Selection for Efficient Formulation Development in a...

Area of Science:

• Pharmaceutical Manufacturing
• Formulation Science
• Chemical Engineering

Background:

• The pharmaceutical industry is transitioning from batch to continuous manufacturing processes.
• Continuous twin-screw wet granulation requires a scientific approach for binder selection.
• Understanding binder attributes is crucial for efficient formulation development.

Purpose of the Study:

• To investigate pharmaceutical binder suitability for continuous twin-screw wet granulation.
• To identify critical binder attributes influencing effectiveness in wet granulation.
• To compare binder selection strategies for highly soluble and poorly soluble formulations.

Main Methods:

• Investigated binder attributes affecting effectiveness using a highly soluble model excipient (mannitol).
• Assessed binder dissolution kinetics, viscosity, and wetting properties.
• Compared findings with previous studies on poorly soluble formulations (dicalcium phosphate).

Main Results:

• For highly soluble formulations, binder effectiveness correlates with fast activation (dissolution, low viscosity, good wetting).
• Critical binder attributes for selection vary based on formulation solubility.
• Binder addition was particularly beneficial for poorly soluble formulations.

Conclusions:

• Rational binder selection for twin-screw granulation requires considering formulation solubility.
• Identified key binder attributes for efficient development of both soluble and insoluble drug formulations.
• Binder addition significantly enhances granulation of poorly soluble compounds.