Background
Unhealthy alcohol use (UAU) affects not only the drinking individual, but also significant others (SOs), such as partners and children. Most of the harm to others caused by alcohol can be attributed to common, moderate drinking patterns, but existing studies have mainly included SOs of individuals with severe UAU. There is a need for increased knowledge regarding SOs of individuals in an earlier stage of UAU and efficacious support programs for this group. The aims of this study were to investigate reasons for seeking support as described by SOs sharing a child with a co-parent with UAU and to investigate how SOs perceived effects of a web-based self-delivered support program.