申请人:Pfizer Products Inc.
公开号:EP1027885A2
公开(公告)日:2000-08-16
A composition comprising a basic drug, a drug which forms a zwitterion, or a salt of either entity, admixed with a polymer selected from hydroxypropylmethylcellulose acetate succinate (HPMCAS), cellulose acetate trimellitate (CAT), cellulose acetate phthalate (CAP), hydroxypropylcellulose acetate phthalate (HPCAP), hydroxypropylmethyl-cellulose acetate phthalate (HPMCAP), and methylcellulose acetate phthalate (MCAP). The compositions having improved solubility, hence bioavailability, in the small intestine; Processes for testing such compositions, and methods of using such compositions. The compositions comprise the basic drug, zwitterion, or salt and one or more of the aforementioned polymers. The invention further relates to a method for increasing the bioavailability of a basic or a zwitterionic drug comprising co-administering the basic drug, the zwitterionic drug, or the salt, with one or more of the aforementioned polymers.
一种组合物,包括一种碱性药物、一种形成齐聚物的药物或其中一种的盐,与一种选自羟丙基甲基纤维素醋酸琥珀酸酯(HPMCAS)的聚合物混合、邻苯二甲酸醋酸纤维素(CAP)、邻苯二甲酸羟丙基纤维素(HPCAP)、邻苯二甲酸羟丙基甲基纤维素 (HPMCAP)和邻苯二甲酸甲基纤维素(MCAP)。这些组合物在小肠中的溶解度有所提高,因此生物利用率也有所提高;测试此类组合物的工艺以及使用此类组合物的方法。这些组合物包括基本药物、齐聚物或盐以及一种或多种上述聚合物。本发明还涉及一种提高碱性药物或齐聚物生物利用度的方法,包括将碱性药物、齐聚物或盐与一种或多种上述聚合物共同给药。