Powdered solution technology: principles and mechanism.

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Powder Technology

Background:

• Powdered solutions offer a method to formulate liquid medications into stable, dry powders.
• Existing methods face challenges with poor powder flowability, limiting industrial application.
• Improved drug release profiles are achievable, even for poorly water-soluble drugs.

Purpose of the Study:

• To present a theoretical model for optimizing powdered solution formulations.
• To introduce a new powder property, the flowable liquid-retention potential (phi value).
• To derive mathematical expressions for calculating optimal excipient amounts for improved flowability.

Main Methods:

• Development of a theoretical model based on powdered solution principles.
• Introduction and definition of the flowable liquid-retention potential (phi value).
• Derivation of mathematical equations for excipient optimization.
• Experimental validation using clofibrate and prednisolone.

Main Results:

• A novel theoretical model for powdered solutions was established.
• The flowable liquid-retention potential (phi value) was introduced as a key powder property.
• Mathematical expressions were derived and experimentally validated for optimizing excipient use.
• The proposed model demonstrated superior performance in achieving acceptable powder flowability compared to previous methods.

Conclusions:

• The new theoretical model and phi value provide a robust framework for developing powdered solutions.
• Optimized excipient quantities can be calculated to ensure acceptable powder flow properties.
• This approach enhances the practicality and industrial applicability of powdered solution technology for drug formulation.