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Updated: May 3, 2026

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
Published on: August 9, 2022
Quality by design: discussing and assessing the solid dispersions risk.
Luise L Chaves, Alexandre C C Vieira, Salette Reis
1Department of Applied Chemistry, Faculty of Pharmacy - University of Porto, Rua Jorge Viterbo Ferreira, 228, Edifício 3, piso 2, Postal Code: 4050-313 Porto, Portugal. luiselopes@gmail.com.
Solid Dispersions (SDs) enhance drug dissolution but face challenges. Applying the Quality by Design (QbD) approach systematically addresses formulation and production variables for poorly soluble drugs, improving SD development.
Area of Science:
- Pharmaceutical Science
- Drug Delivery Systems
Background:
- Poor water solubility is a major challenge in drug discovery.
- Solid Dispersions (SDs) are commonly used to improve the dissolution of poorly soluble compounds.
- Traditional SD development faces commercialization challenges.
Purpose of the Study:
- To review and apply the Quality by Design (QbD) concept to Solid Dispersion (SD) development.
- To identify and discuss variables in SD formulation and production.
- To address challenges in developing formulations for poorly soluble drugs using SDs.
Main Methods:
- Systematic application of the Quality by Design (QbD) approach.
- Discussion of SD production methods, polymer selection, characterization, and stability.
- Risk assessment for SD design and production.
Main Results:
- QbD provides a systematic, multivariate approach to SD development, moving beyond empirical understanding.
- Key parameters for SD design and production, including methods, polymers, characterization, and stability, were discussed.
- Risk assessment identified critical points for rational SD formulation.
Conclusions:
- The QbD approach offers a structured framework for overcoming challenges in SD development and commercialization.
- A rational approach to SD formulation is facilitated by understanding critical parameters and risks.
- This review enhances the understanding and application of SD technology for poorly soluble drugs.
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