The present invention addresses the problem of providing a medicine for treating alcohol use disorders. The present invention is a medicine which contains a compound represented by general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient and can be used for the treatment of alcohol use disorders. [In the formula, R2 represents a hydrogen atom or a halogen atom； and R1 represents a group selected from the group consisting of the groups shown in (II).] (II)
