abstract |
(57) [Summary] [Structure] A sparingly soluble drug having a carboxyl group, polyvinylpyrrolidone, aminoalkylmethacrylate copolymer E, aminoalkylmethacrylate copolymer R An easily absorbable preparation containing at least one amino group-containing polymer selected from the group consisting of S and polyvinyl acetal diethylaminoacetate. [Effect] The dissolution rate of a poorly soluble drug having a carboxyl group can be easily increased. |