RENAL DYSFUNCTION IMPROVING DRUG COMPRISING OPTICAL ISOMER OF 1,4-BENZOTHIAZEPINE-1-OXIDE DERIVATIVE

摘要

The present invention addresses the problem of providing a pharmaceutical composition for treatment of a variety of conditions accompanied by renal dysfunction.Renal dysfunction is improved by a pharmaceutical composition that comprises an optical isomer of a 1,4-benzothiazepine-1-oxide derivative represented by general formula [II]wherein, R represents a hydrogen atom or a hydroxyl group, and "*" indicates being an optical isomer.or a pharmacologically acceptable salt thereof.