手法を比較

	固形分散体製剤	f1/f2 類似度因子（Dissolution f1/f2 Similarity Factor）
分野	薬理学	薬理学
系統	Process / pipeline	Process / pipeline
提唱年	1971	1996
提唱者	William Chiou and Solomon Riegelman	James Moore and Hector Flanner
種類	solubility enhancement	similarity testing
原典	Chiou, W. L., Riegelman, S. (1971). Pharmaceutical applications of solid dispersions. Journal of Pharmaceutical Sciences, 60(9), 1281-1302.	Moore, J. W., & Flanner, H. H. (1996). Mathematical comparison of dissolution profiles. Pharmaceutical Technology, 20(6), 64-74.
別名	solid solution, amorphous dispersion, polymer-based formulation	f1, f2, similarity factor
関連	3	3
概要	Solid dispersion is a formulation technique where a poorly soluble drug is molecularly dispersed in a hydrophilic polymer matrix, improving aqueous solubility and bioavailability. Introduced by Chiou and Riegelman in 1971, solid dispersions remain a key strategy for overcoming solubility-limited absorption.	The f1 and f2 factors are dimensionless statistical measures developed by Moore and Flanner to quantify the similarity between two dissolution profiles. Adopted by regulatory agencies (FDA, EMA) as the gold standard for comparing dissolution curves, these factors enable rapid assessment of whether formulation changes significantly impact drug release.