Abstract: The present invention relates to the use of a compound having the formula I, wherein R1 are independently hydrogen or a C1-C4 straight or branched alkyl group, which may be substituted with one or more halogen and/or C1-C4 alkyloxy groups, R2 is a C1-C3 hydrocarbyl group, R3 is a C1-C4 straight or branched alkyl group, which may be substituted by one or more C1-C4 alkyloxy groups and/or halogen groups, or R3 is a phenyl group, or a benzyl group, which may be substituted with one or more C1-C4 straight or branched alkyl group, (ethyl, propyl, trimethyl) and/or C1-C4 alkyloxy groups and/or halogen groups, or a pharmaceutically acceptable salt thereof for the preparation of a pharmaceutical composition for treating tinnitus. The invention also relates to a pharmaceutical composition comprising the compounds and a method for treating tinnitus by administrating the compounds.