PROBLEM TO BE SOLVED: To provide a medicinal composition including polymer having an improved oral absorbing property of a medicine which is an active ingredient.SOLUTION: This composition for oral or injection includes (1) a medicine and (2) a copolymer of 2-methacryloyloxyethylphosphorylcholine and a methacrylate having repeating unit expressed by formula [1] and the molecular weight of the copolymer is &ge5,000. [a is 0.03-0.10, b is 0.30-0.97, n is an integer &ge2, R is H or OR (R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group)].COPYRIGHT: (C)2002,JPO【課題】活性成分である医薬の経口吸収性が改善されている重合体含有組成物を提供する。【解決手段】(1)医薬品と(2)式【化1】〔ただし、aは0.03~0.70、bは0.30~0.97、nは2以上の整数、RはHまたはOR’(R’は脂肪族炭化水素基または芳香族炭化水素基を示す)を示す〕で示される繰り返し単位を有し、分子量5000以上を有する2-メタクリロイルオキシエチルホスホリルコリンとメタクリル酸エステルとの共重合体とを含有してなる経口用または注射用組成物。
