The present invention is directed to crystalline addition salts of (i) 8-hydroxyquinolin-2(1H)-one derivatives and (ii) a dicarboxylic acid or a sulfimide, or a pharmaceutically acceptable solvates thereof.本發明係關於(i)8-羥基喹啉-2(1H)-酮衍生物及(ii)二羧酸或磺醯亞胺之結晶加成鹽,或其醫藥學上可接受之溶劑合物。