Method for preparing suspensions of low-solubility materials
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United States of America Patent
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Oct 3, 2017
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app pub date -
Oct 21, 2014
filing date -
Mar 24, 2009
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Abstract
A process for producing a pharmaceutical suspension that comprises an active pharmaceutical ingredient (“API”) having low solubility, the process comprises: (a) preparing a first solution comprising a carboxy-containing vinyl polymer and a solvent; and (b) adding a compound of the API to said first solution under conditions of high-shear mixing for a time from about 5 minutes to about 5 hours, said compound being soluble in said solvent, thereby producing a suspension of particles of said API in a composition comprising said carboxy-containing vinyl polymer; wherein a concentration of said API in said suspension is higher than a solubility of said API in said solvent. The present invention also provides a suspension produced by such process.
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