The manifestations and progression of alcohol use disorder (AUD) are influenced by a number of contextual factors, with the current coronavirus pandemic being a significant example. This pandemic has profoundly impacted nearly all aspects of human life and has, therefore, strongly influenced patients suffering from AUD. In some cases, the pandemic has led to a reduction in severity, while in others, it has had the opposite effect. In our own work we have been investigating the negative impact of the pandemic on 45 patients with AUD who were undergoing outpatient treatment, including supervised use of disulfiram (Antabuse), in a close-knit program. A linear trend analysis demonstrated significant alterations in the retention rate over a 3-year period, encompassing the pre-pandemic, pandemic, and post-pandemic periods. During the pandemic the number of treatment cancellations virtually increased. Following the pandemic, a tendency towards the normalization of patient numbers was observed. Our data indicate a high level of vulnerability among patients with severe AUD and highlight a need for the development of alternative, possibly telemedical, treatment methods.