申请人:Ketner Rodney James
公开号:US20100029667A1
公开(公告)日:2010-02-04
Pharmaceutical compositions comprising a poorly water soluble ionizable drug, a cationic species and a dispersion polymer are disclosed, together with a process for forming the compositions. The neutral form of the drug has (i) a solubility of less than 1 mg/ml, in aqueous solution at a pH between 6 and 7, (ii) a solubility of less than 20 mg/mL in a volatile organic solvent, and (iii) an acidic pKa value of greater than 5. At least 90 wt % of the drug in the solid dispersion being in a non-crystalline form. The drug, the cationic species, and the dispersion polymer constitute at least 80 wt % of the solid dispersion.
本发明涉及一种包含难溶性离子型药物、阳离子物种和分散聚合物的制药组合物,以及制备该组合物的方法。该药物的中性形式在pH为6到7的水溶液中的溶解度小于1 mg/mL,在挥发性有机溶剂中的溶解度小于20 mg/mL,并且具有大于5的酸性pKa值。在固体分散物中至少90重量%的药物处于非晶态形式。该药物、阳离子物种和分散聚合物构成固体分散物的至少80重量%。