A kit, composition, product or medicament for treating cognitive impairment is provided, which includes a therapeutic agent for neurodegeneralive disease and a heterocyclic compound represented by the following General Formula (I): or a hydrate thereof, a solvae thereof or a pharmaceutically acceptable salt thereof.本發明提供一種用以治療認知損傷之套組、組成物、產品或藥劑,其包含神經退變性疾病用治療劑及下列通式(I)代表之雜環化合物:或其水合物、溶劑化物或醫藥上可接受的鹽。