These proceedings summarize the presentations of the 13th Alcohol Hangover Research Group meeting held 20–22 April 2023 in Dresden, Germany. The purpose of this annual meeting is to discuss current research on the causes, consequences and treatment of alcohol hangover, to network, and to establish future research collaborations. Various topics of interest were presented and discussed, including the impact of anxiety and personality on susceptibility for experiencing hangovers, sleep, the impact of the COVID-19 pandemic, the role of inflammation and alcohol metabolism in the pathology of alcohol hangover, novel treatments, and the changing regulatory landscape for hangover solutions.