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Updated: Jun 15, 2026

Formation of Dispersible Taohong Siwu Tablets
Published on: February 3, 2023
Dissolution-modulating mechanism of pH modifiers in solid dispersion containing weakly acidic or basic drugs with
Phuong Ha-Lien Tran1, Thao Truong-Dinh Tran, Kyoung-Ho Lee
1Kangwon National University, College of Pharmacy, Bioavailability Control Laboratory, Chuncheon, Republic of Korea.
pH-modified solid dispersions enhance drug dissolution for poorly soluble, pH-dependent drugs. Mechanistic studies reveal how pH modifiers improve drug release and solubilization in these systems.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
Background:
- Solid dispersion enhances drug dissolution but has limited capacity, especially for pH-dependent drugs.
- Poorly water-soluble drugs pose challenges in achieving effective therapeutic concentrations.
Purpose of the Study:
- To review the mechanisms by which pH-modified solid dispersions improve the dissolution rates of weakly acidic or basic drugs.
- To explore the impact of pH modifiers on drug behavior and release within solid dispersion systems.
Main Methods:
- Comprehensive literature review of recent reports on pH-modified solid dispersions.
- Analysis of studies investigating the role of pH modifiers in drug dissolution.
Main Results:
- pH modifiers alter drug structural behaviors, molecular interactions, and microenvironmental pH within solid dispersions.
- The release rate of pH modifiers influences the enhanced dissolution of poorly soluble, pH-dependent drugs.
Conclusions:
- Step-by-step mechanistic approaches are crucial for optimizing solid dispersion systems for pH-dependent drugs.
- Understanding these mechanisms can guide the development of future drug delivery systems for enhanced solubility.
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