The object of the present invention is to provide a hangover prophylactic and/or therapeutic agent. The present invention provides a hangover prophylactic and/or therapeutic agent comprising ALAs.本發明課題在於提供一種防止酒精對人體造成不適之宿醉預防劑及/或治療劑。解決手段為本發明係提供一種包含ALA類之防止酒精對人體造成不適之宿醉預防劑及/或治療劑。