This paper investigates to what extent individual alcohol consumption depends on consumption patterns by other household members and on social interactions outside the household. In particular, it explores the differences between use and abuse, beer, wine and spirits, youth and adults, various forms of social relations, and controlling or not for family influence and unobserved heterogeneity. We find that both the drinking intensity by other household members and a richer social life outside home are positively related to alcohol consumption. Allowing for identity-specific family interaction effects, we also find that for youths siblings are more influential than parents.