Formulation design for poorly water-soluble drugs based on biopharmaceutics classification system: basic approaches...

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery
• Biopharmaceutics

Background:

• Poor aqueous solubility significantly hinders oral drug bioavailability, complicating research and development.
• Effective formulation strategies are essential for overcoming solubility limitations in drug development timelines.

Purpose of the Study:

• To review viable formulation options for enhancing the solubility, dissolution rate, and oral bioavailability of poorly water-soluble drugs.
• To provide a biopharmaceutics classification system-based overview of formulation strategies for challenging drug candidates.

Main Methods:

• Review of literature-based formulation strategies for poorly water-soluble compounds.
• Discussion of approaches including crystal modification, micronization, amorphization, self-emulsification, cyclodextrin complexation, and pH modification.
• Analysis of practical applications and marketed products utilizing these formulation options.

Main Results:

• Various formulation techniques can effectively improve the oral bioavailability of poorly water-soluble drugs.
• Classification based on biopharmaceutical properties aids in predicting drug development challenges.
• Examples of successful formulation strategies in marketed products are presented.

Conclusions:

• Understanding physicochemical and biopharmaceutical properties is key to selecting appropriate delivery options.
• Efficient formulation development for poorly water-soluble drugs relies on a thorough knowledge of available strategies and their limitations.