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A novel method of drug solubilization in aqueous media by acid-base interaction is presented. Physically stable amorphous systems of drugs may also be prepared by using this organic solvent-free approach.

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Physically stable ASD of itraconazole with high drug load was prepared by interaction with glutaric acid in a hot melt extruder. This may be used as a platform technology for the development ASD of most poorly water-soluble basic drugs.

A method of highly solubilizing an extremely water-insoluble drug, ITZ, in aqueous media and converting it into an amorphous form in a physically stable SD was successfully investigated. The dissolution rate and the extent of supersaturation of the drug in dissolution media improved greatly, and any precipitate formed at high pH had very small particle size.