| abstract |
A pharmaceutical for preventing or treating an inner ear disorder, comprising a spirohydantoin derivative represented by a general formula (I): n n n n n n n n n n n n 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, n or a pharmacologically acceptable salt thereof as an active ingredient. |