PROPHYLACTIC OR THERAPEUTIC MEDICATION FOR INNER EAR DISORDERS

摘要

A pharmaceutical for preventing or treating an inner ear disorder, comprising a spirohydantoin derivative represented by a general formula (I):
in the formula, X represents a halogen atom or a hydrogen atom, and R 1 and R 2 simultaneously or individually represent a hydrogen atom or an optionally substituted C 1-6 alkyl group,
or a pharmacologically acceptable salt thereof as an active ingredient.