Excipients selection for amorphous solid dispersions

For Dr. Frank Romanski, it is important to understand that solid amorphous dispersions are an “unique and elegant type of system” - the drug is fully solubilized within the polymer matrix. But this makes the right interaction of the API itself in the polymer system critical Learn more on the key features to achieve a stable solid amorphous dispersion.

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where did he talk about excipient selction ?. wasted my time