The present invention aims to provide a
serotonin uptake inhibitor that can exert its effects more efficiently by analyzing the component composition of plants of the
genus Valerian. [Solution] The present invention provides a
serotonin reuptake inhibitor comprising a compound represented by the following formula (1), and one or more selected from the group consisting of the compound, canoconyl acetate, and α-kesyl acetate as active ingredients. [Formula 1] TIFF2026060423000008.tif50170