A novel benzimidazole derivative ¢specifically, for example, 2-ethoxy-1-¢{4'- (2''-N,N-dimethylamino-ethoxycarbonyl)phenyl}methyl!-1H-benzimidazole-6-carboxylic acid morpholide! represented by formula (I) and a salt thereof. The compound exhibits satisfactory curative and preventive effects for cardiac and nephric diseases, although it has little action to blood-pressure.
